PMID-sentid Pub_year Sent_text comp_official_name comp_offset protein_name organism prot_offset 23263862-1 2013 Frameshift mutations in the last coding exon of the 5-aminolevulinate synthase (ALAS) 2 gene were described to activate the enzyme causing increased levels of zinc- and metal-free protoporphyrin in patients with X-linked dominant protoporphyria (XLDPP). Metals 169-174 5'-aminolevulinate synthase 2 Homo sapiens 80-87 24003969-3 2013 The most common form is X-linked sideroblastic anemia, due to mutations in the erythroid-specific delta-aminolevulinate synthase (ALAS2), which is the first enzyme of the heme biosynthesis pathway in erythroid cells. Heme 171-175 5'-aminolevulinate synthase 2 Homo sapiens 130-135 23500306-9 2013 The rate-limiting enzyme in heme synthesis, delta-aminolevulinic acid synthase 2 (ALAS2), was significantly upregulated in HF. Heme 28-32 5'-aminolevulinate synthase 2 Homo sapiens 44-80 23500306-9 2013 The rate-limiting enzyme in heme synthesis, delta-aminolevulinic acid synthase 2 (ALAS2), was significantly upregulated in HF. Heme 28-32 5'-aminolevulinate synthase 2 Homo sapiens 82-87 23500306-10 2013 Overexpression of ALAS2 in H9c2 cardiac myoblasts resulted in increased heme levels, and hypoxia and erythropoietin treatment increased heme production through upregulation of ALAS2. Heme 72-76 5'-aminolevulinate synthase 2 Homo sapiens 18-23 23500306-10 2013 Overexpression of ALAS2 in H9c2 cardiac myoblasts resulted in increased heme levels, and hypoxia and erythropoietin treatment increased heme production through upregulation of ALAS2. Heme 136-140 5'-aminolevulinate synthase 2 Homo sapiens 176-181 23263862-1 2013 Frameshift mutations in the last coding exon of the 5-aminolevulinate synthase (ALAS) 2 gene were described to activate the enzyme causing increased levels of zinc- and metal-free protoporphyrin in patients with X-linked dominant protoporphyria (XLDPP). protoporphyrin IX 180-194 5'-aminolevulinate synthase 2 Homo sapiens 80-87 24135682-1 2013 X-linked dominant protoporphyria (XLDPP) is a genetic disorder that affects the synthesis of the heme group due to an increase in delta-aminolaevulinate synthase 2 (ALAS2) enzyme activity. Heme 97-101 5'-aminolevulinate synthase 2 Homo sapiens 130-163 23348515-2 2013 Previously, two exon 11 small deletions, c.1699_1670DeltaAT (DeltaAT) and c.1706_1709DeltaAGTG (DeltaAGTG), that prematurely truncated or elongated the ALAS2 polypeptide, were reported to increase enzymatic activity 20- to 40-fold, causing the erythroid accumulation of protoporphyrins, cutaneous photosensitivity and liver disease. Protoporphyrins 270-285 5'-aminolevulinate synthase 2 Homo sapiens 152-157 23348515-9 2013 Thus, these ALAS2 gain-of-function mutations increased the specific activity (DeltaAT, DeltaAGTG and p.Q548X) or stability (DeltaG) of the enzyme, thereby leading to the increased erythroid protoporphyrin accumulation causing XLP. erythroid protoporphyrin 180-204 5'-aminolevulinate synthase 2 Homo sapiens 12-17 24135682-1 2013 X-linked dominant protoporphyria (XLDPP) is a genetic disorder that affects the synthesis of the heme group due to an increase in delta-aminolaevulinate synthase 2 (ALAS2) enzyme activity. Heme 97-101 5'-aminolevulinate synthase 2 Homo sapiens 165-170 24135682-4 2013 Protoporphyrin levels in serum and feces were significantly elevated and a heterozygous frameshift mutation in the exon 11 of the ALAS2 gene: c.1706-1709del (p.Glu569GlyfsX24) was identified. protoporphyrin IX 0-14 5'-aminolevulinate synthase 2 Homo sapiens 130-135 21750082-6 2011 In agreement with these observations in beta-thalassemic cells we found decreased heme levels related to significantly reduced activity of the first enzyme of the heme pathway, delta-aminolevulinate synthase-2 without differences in its expression. Heme 82-86 5'-aminolevulinate synthase 2 Homo sapiens 177-209 22740690-6 2012 In contrast, vitamin B6-responsive XLSA mutations p.Arg452Cys and p.Arg452His, with normal in vitro enzyme activity and stability, did not interfere with binding to SUCLA2 but instead had loss of positive cooperativity for succinyl-CoA binding, an increased K(m) for succinyl-CoA, and reduced vitamin B6 affinity. Vitamin B 6 13-23 5'-aminolevulinate synthase 2 Homo sapiens 35-39 22740690-6 2012 In contrast, vitamin B6-responsive XLSA mutations p.Arg452Cys and p.Arg452His, with normal in vitro enzyme activity and stability, did not interfere with binding to SUCLA2 but instead had loss of positive cooperativity for succinyl-CoA binding, an increased K(m) for succinyl-CoA, and reduced vitamin B6 affinity. succinyl-coenzyme A 223-235 5'-aminolevulinate synthase 2 Homo sapiens 35-39 22740690-6 2012 In contrast, vitamin B6-responsive XLSA mutations p.Arg452Cys and p.Arg452His, with normal in vitro enzyme activity and stability, did not interfere with binding to SUCLA2 but instead had loss of positive cooperativity for succinyl-CoA binding, an increased K(m) for succinyl-CoA, and reduced vitamin B6 affinity. succinyl-coenzyme A 267-279 5'-aminolevulinate synthase 2 Homo sapiens 35-39 22740690-6 2012 In contrast, vitamin B6-responsive XLSA mutations p.Arg452Cys and p.Arg452His, with normal in vitro enzyme activity and stability, did not interfere with binding to SUCLA2 but instead had loss of positive cooperativity for succinyl-CoA binding, an increased K(m) for succinyl-CoA, and reduced vitamin B6 affinity. Vitamin B 6 293-303 5'-aminolevulinate synthase 2 Homo sapiens 35-39 22876010-9 2012 RESULTS: In the ASB group, saline showed statistically higher bond strength values at the different concentrations of EDTA, while the micro-tensile bond strengths of the different concentrations of EDTA were not statistically different. Sodium Chloride 27-33 5'-aminolevulinate synthase 2 Homo sapiens 16-19 22876010-9 2012 RESULTS: In the ASB group, saline showed statistically higher bond strength values at the different concentrations of EDTA, while the micro-tensile bond strengths of the different concentrations of EDTA were not statistically different. Edetic Acid 118-122 5'-aminolevulinate synthase 2 Homo sapiens 16-19 21750082-6 2011 In agreement with these observations in beta-thalassemic cells we found decreased heme levels related to significantly reduced activity of the first enzyme of the heme pathway, delta-aminolevulinate synthase-2 without differences in its expression. Heme 163-167 5'-aminolevulinate synthase 2 Homo sapiens 177-209 21750082-7 2011 We demonstrated that the activity of recombinant delta-aminolevulinate synthase-2 is inhibited by both reactive oxygen species and hemin as a protective mechanism in beta-thalassemic cells. Reactive Oxygen Species 103-126 5'-aminolevulinate synthase 2 Homo sapiens 49-81 21750082-7 2011 We demonstrated that the activity of recombinant delta-aminolevulinate synthase-2 is inhibited by both reactive oxygen species and hemin as a protective mechanism in beta-thalassemic cells. Hemin 131-136 5'-aminolevulinate synthase 2 Homo sapiens 49-81 21627978-4 2011 MATERIALS AND METHODS: Four patients had a deletion in ALAS2 that causes enzyme gain-of-function, resulting in increased formation of protoporphyrin; one had a heterozygous major deletion in FECH DNA. protoporphyrin IX 134-148 5'-aminolevulinate synthase 2 Homo sapiens 55-60 21653323-3 2011 The discovery of a new type of erythroid porphyria, X-linked dominant protoporphyria (XLDPP), which results from increased activity of 5-aminolevulinate synthase 2 (ALAS2), the rate-controlling enzyme of erythroid heme synthesis, led us to hypothesize that the CEP phenotype may be modulated by sequence variations in the ALAS2 gene. Heme 214-218 5'-aminolevulinate synthase 2 Homo sapiens 135-163 21653323-3 2011 The discovery of a new type of erythroid porphyria, X-linked dominant protoporphyria (XLDPP), which results from increased activity of 5-aminolevulinate synthase 2 (ALAS2), the rate-controlling enzyme of erythroid heme synthesis, led us to hypothesize that the CEP phenotype may be modulated by sequence variations in the ALAS2 gene. Heme 214-218 5'-aminolevulinate synthase 2 Homo sapiens 165-170 21653323-7 2011 The rate of 5-aminolevulinate release from Y586F was significantly increased over that of wild-type ALAS2. Aminolevulinic Acid 12-29 5'-aminolevulinate synthase 2 Homo sapiens 100-105 21348241-9 2010 The most common inherited sideroblastic anemia is X-linked sideroblastic anemia (XLSA) caused by mutations of the erythroid-specific delta-aminolevulinate synthase gene (ALAS2), which is the first enzyme involved in heme biosynthesis in erythroid cells. Heme 216-220 5'-aminolevulinate synthase 2 Homo sapiens 170-175 21388451-1 2011 Pyridoxine, or vitamin B6, is commonly used to treat acquired idiopathic sideroblastic anaemia (AISA, including refractory anaemia with ring sideroblasts), but the efficacy of this therapy in an unselected AISA population (i.e. patients without confirmed ALAS2 or other pyridoxine-responsive germline mutations) has not been established. Pyridoxine 0-10 5'-aminolevulinate synthase 2 Homo sapiens 255-260 21388451-1 2011 Pyridoxine, or vitamin B6, is commonly used to treat acquired idiopathic sideroblastic anaemia (AISA, including refractory anaemia with ring sideroblasts), but the efficacy of this therapy in an unselected AISA population (i.e. patients without confirmed ALAS2 or other pyridoxine-responsive germline mutations) has not been established. Vitamin B 6 15-25 5'-aminolevulinate synthase 2 Homo sapiens 255-260 21252495-2 2011 The most common form is X-linked SA, which results from mutations in erythroid-specific delta-aminolevulinate synthase (ALAS2), the first enzyme in heme biosynthesis. Heme 148-152 5'-aminolevulinate synthase 2 Homo sapiens 120-125 21252495-7 2011 A novel K156E substitution in ALAS2 was discovered in 1 pyridoxine-responsive patient. Pyridoxine 56-66 5'-aminolevulinate synthase 2 Homo sapiens 30-35 21252495-10 2011 CONCLUSION: Our report extends the list of known ALAS2 mutations, with the addition of a novel K156E substitution that is responsive to pyridoxine treatment and contributes to the general knowledge of congenital SA cases characterized worldwide. Pyridoxine 136-146 5'-aminolevulinate synthase 2 Homo sapiens 49-54 20848343-5 2010 The most common inherited sideroblastic anemia is X-linked sideroblastic anemia (XLSA) caused by mutations of the erythroid-specific delta-aminolevulinate synthase gene (ALAS2), which is the first enzyme of heme biosynthesis in erythroid cells. Heme 207-211 5'-aminolevulinate synthase 2 Homo sapiens 170-175 20850938-11 2010 Finally, about 4% of unrelated EPP patients have X-linked dominant protoporphyria (XLDPP) (MIM 300752) caused by gain-of-function mutations in the ALAS2 gene leading to an increased erythroid heme biosynthesis and subsequently an accumulation of protoporphyrin without any FECH deficiency. Heme 192-196 5'-aminolevulinate synthase 2 Homo sapiens 147-152 20850938-11 2010 Finally, about 4% of unrelated EPP patients have X-linked dominant protoporphyria (XLDPP) (MIM 300752) caused by gain-of-function mutations in the ALAS2 gene leading to an increased erythroid heme biosynthesis and subsequently an accumulation of protoporphyrin without any FECH deficiency. protoporphyrin IX 246-260 5'-aminolevulinate synthase 2 Homo sapiens 147-152 18637800-2 2008 The most frequent form is X-linked sideroblastic anaemia, caused by mutations of delta-aminolevulinic acid synthase 2 (ALAS2), the enzyme that catalyses the first and regulatory step of haem synthesis in erythroid precursors and is post-transcriptionally controlled by the iron regulatory proteins. Iron 273-277 5'-aminolevulinate synthase 2 Homo sapiens 81-117 19786205-3 2009 The most common X-linked sideroblastic anemia (XLSA), due to mutations of the first enzyme of the heme synthetic pathway, delta-aminolevulinic acid synthase 2 (ALAS2), has linked heme deficiency to mitochondrial iron accumulation. Heme 98-102 5'-aminolevulinate synthase 2 Homo sapiens 122-158 19786205-3 2009 The most common X-linked sideroblastic anemia (XLSA), due to mutations of the first enzyme of the heme synthetic pathway, delta-aminolevulinic acid synthase 2 (ALAS2), has linked heme deficiency to mitochondrial iron accumulation. Heme 98-102 5'-aminolevulinate synthase 2 Homo sapiens 160-165 19786205-3 2009 The most common X-linked sideroblastic anemia (XLSA), due to mutations of the first enzyme of the heme synthetic pathway, delta-aminolevulinic acid synthase 2 (ALAS2), has linked heme deficiency to mitochondrial iron accumulation. Iron 212-216 5'-aminolevulinate synthase 2 Homo sapiens 122-158 19786205-3 2009 The most common X-linked sideroblastic anemia (XLSA), due to mutations of the first enzyme of the heme synthetic pathway, delta-aminolevulinic acid synthase 2 (ALAS2), has linked heme deficiency to mitochondrial iron accumulation. Iron 212-216 5'-aminolevulinate synthase 2 Homo sapiens 160-165 18823803-4 2009 Genetic analyses identified a novel mutation in the iron responsive element of the ALAS2 gene. Iron 52-56 5'-aminolevulinate synthase 2 Homo sapiens 83-88 18823803-6 2009 We suggest that the ALAS2 mutation together with chronic hepatitis C infection may have caused the severe iron overload phenotype. Iron 106-110 5'-aminolevulinate synthase 2 Homo sapiens 20-25 18637800-2 2008 The most frequent form is X-linked sideroblastic anaemia, caused by mutations of delta-aminolevulinic acid synthase 2 (ALAS2), the enzyme that catalyses the first and regulatory step of haem synthesis in erythroid precursors and is post-transcriptionally controlled by the iron regulatory proteins. Iron 273-277 5'-aminolevulinate synthase 2 Homo sapiens 119-124 18555711-2 2008 In this study, we investigated the mechanisms involved in NaBu-induced activation of erythroid-specific 5-aminolevulinate synthase gene (ALAS2). sethoxydim 58-62 5'-aminolevulinate synthase 2 Homo sapiens 137-142 18555711-3 2008 We showed that NaBu upregulated ALAS2 gene transcription in different cell lineages. sethoxydim 15-19 5'-aminolevulinate synthase 2 Homo sapiens 32-37 18555711-4 2008 By using site-directed mutagenesis of putative responsive elements at ALAS2 promoter and reporter gene analysis, we identified that the Sp1 binding sites within the ALAS2 promoter were responsive to NaBu stimulation. sethoxydim 199-203 5'-aminolevulinate synthase 2 Homo sapiens 70-75 18555711-4 2008 By using site-directed mutagenesis of putative responsive elements at ALAS2 promoter and reporter gene analysis, we identified that the Sp1 binding sites within the ALAS2 promoter were responsive to NaBu stimulation. sethoxydim 199-203 5'-aminolevulinate synthase 2 Homo sapiens 165-170 18555711-5 2008 Results from the chromatin immunoprecipitation (ChIP) assays indicated that upon the NaBu stimulation, binding of Sp1 protein to ALAS2 promoter increased significantly, with concurrent increases in acetylation level of histone H3 and dimethylation level of H3-Lysine4 at ALAS2 promoter. sethoxydim 85-89 5'-aminolevulinate synthase 2 Homo sapiens 129-134 18555711-5 2008 Results from the chromatin immunoprecipitation (ChIP) assays indicated that upon the NaBu stimulation, binding of Sp1 protein to ALAS2 promoter increased significantly, with concurrent increases in acetylation level of histone H3 and dimethylation level of H3-Lysine4 at ALAS2 promoter. sethoxydim 85-89 5'-aminolevulinate synthase 2 Homo sapiens 271-276 17768398-6 2007 RT-PCR analysis reveals that N-CoR is required for induction by Ara-C of 5-aminolevulinate synthase (ALA-S2), a key enzyme involved in heme biosynthesis. Cytarabine 64-69 5'-aminolevulinate synthase 2 Homo sapiens 101-107 18760763-0 2008 C-terminal deletions in the ALAS2 gene lead to gain of function and cause X-linked dominant protoporphyria without anemia or iron overload. Iron 125-129 5'-aminolevulinate synthase 2 Homo sapiens 28-33 18760763-1 2008 All reported mutations in ALAS2, which encodes the rate-regulating enzyme of erythroid heme biosynthesis, cause X-linked sideroblastic anemia. Heme 87-91 5'-aminolevulinate synthase 2 Homo sapiens 26-31 18669654-3 2008 We show that SNCA and the heme metabolism genes ALAS2, FECH, and BLVRB form a block of tightly correlated gene expression in 113 samples of human blood, where SNCA naturally abounds (validated P = 1.6 x 10(-11), 1.8 x 10(-10), and 6.6 x 10(-5)). Heme 26-30 5'-aminolevulinate synthase 2 Homo sapiens 48-53 19066423-0 2008 Multi-organ iron overload in an African-American man with ALAS2 R452S and SLC40A1 R561G. Iron 12-16 5'-aminolevulinate synthase 2 Homo sapiens 58-63 19066423-1 2008 BACKGROUND: X-linked sideroblastic anemia (XLSA) is associated with iron overload and mutations in ALAS2, which encodes 5-aminolevulinate synthase. Iron 68-72 5'-aminolevulinate synthase 2 Homo sapiens 12-41 19066423-1 2008 BACKGROUND: X-linked sideroblastic anemia (XLSA) is associated with iron overload and mutations in ALAS2, which encodes 5-aminolevulinate synthase. Iron 68-72 5'-aminolevulinate synthase 2 Homo sapiens 43-47 19066423-10 2008 CONCLUSIONS: ALAS2 R452S largely explains this patient"s microcytic anemia and multi-organ iron overload and dysfunction. Iron 91-95 5'-aminolevulinate synthase 2 Homo sapiens 13-18 17768398-6 2007 RT-PCR analysis reveals that N-CoR is required for induction by Ara-C of 5-aminolevulinate synthase (ALA-S2), a key enzyme involved in heme biosynthesis. Heme 135-139 5'-aminolevulinate synthase 2 Homo sapiens 101-107 16935983-0 2006 A novel mutation, Ile289Thr, in the ALAS2 gene in a family with pyridoxine responsive sideroblastic anaemia. ile289thr 18-27 5'-aminolevulinate synthase 2 Homo sapiens 36-41 17485548-8 2007 Based on the biochemical and clinical phenotype, we hypothesize that IRP2, less degraded by low heme, contributes to the repression of the erythroblasts ferritin and ALAS2, increasing mitochondrial iron. Heme 96-100 5'-aminolevulinate synthase 2 Homo sapiens 166-171 17192398-2 2007 Here, we show that Abcb7 is essential for hematopoiesis and formally demonstrate that XLSA/A is due to partial loss of function mutations in Abcb7 that directly or indirectly inhibit heme biosynthesis. Heme 183-187 5'-aminolevulinate synthase 2 Homo sapiens 86-90 16904069-1 2006 Erythroid-specific 5-aminolevulinate synthase (ALAS2) catalyzes the rate-limiting step in heme biosynthesis of erythroid cells. Heme 90-94 5'-aminolevulinate synthase 2 Homo sapiens 47-52 16904069-2 2006 Here, we show that treatment of erythroid K562 cells with HDAC inhibitors sodium butyrate or Trichostatin A gave rise to a significant increase in ALAS2 gene transcripts, with a concurrent increase in acetylation level of histone H4 at the ALAS2 gene promoter. Butyric Acid 74-89 5'-aminolevulinate synthase 2 Homo sapiens 147-152 16904069-2 2006 Here, we show that treatment of erythroid K562 cells with HDAC inhibitors sodium butyrate or Trichostatin A gave rise to a significant increase in ALAS2 gene transcripts, with a concurrent increase in acetylation level of histone H4 at the ALAS2 gene promoter. Butyric Acid 74-89 5'-aminolevulinate synthase 2 Homo sapiens 240-245 16904069-2 2006 Here, we show that treatment of erythroid K562 cells with HDAC inhibitors sodium butyrate or Trichostatin A gave rise to a significant increase in ALAS2 gene transcripts, with a concurrent increase in acetylation level of histone H4 at the ALAS2 gene promoter. trichostatin A 93-107 5'-aminolevulinate synthase 2 Homo sapiens 147-152 16904069-2 2006 Here, we show that treatment of erythroid K562 cells with HDAC inhibitors sodium butyrate or Trichostatin A gave rise to a significant increase in ALAS2 gene transcripts, with a concurrent increase in acetylation level of histone H4 at the ALAS2 gene promoter. trichostatin A 93-107 5'-aminolevulinate synthase 2 Homo sapiens 240-245 16935983-0 2006 A novel mutation, Ile289Thr, in the ALAS2 gene in a family with pyridoxine responsive sideroblastic anaemia. Pyridoxine 64-74 5'-aminolevulinate synthase 2 Homo sapiens 36-41 15498136-3 2004 The full length cDNA of ALAS2 gene was inserted into plasmid pDs-red2-N1, named pDs-red2-N1/ALAS2. Palladium 61-64 5'-aminolevulinate synthase 2 Homo sapiens 24-29 16540354-0 2006 Disparate phenotypic expression of ALAS2 R452H (nt 1407 G --> A) in two brothers, one with severe sideroblastic anemia and iron overload, hepatic cirrhosis, and hepatocellular carcinoma. Iron 126-130 5'-aminolevulinate synthase 2 Homo sapiens 35-40 16540354-3 2006 The proband"s brother, an ALAS2 R452H hemizygote, had mild anemia and mild iron overload. Iron 75-79 5'-aminolevulinate synthase 2 Homo sapiens 26-31 16446107-1 2006 Mutations in aminolevulinate synthase 2 (ALAS2) are usually associated with sideroblastic anemia and iron overload. Iron 101-105 5'-aminolevulinate synthase 2 Homo sapiens 41-46 16446107-2 2006 The objective of this study was to determine if "mild" mutations in ALAS2 might increase the severity of primary iron overload. Iron 113-117 5'-aminolevulinate synthase 2 Homo sapiens 68-73 16446107-3 2006 Direct sequencing of the ALAS2 gene was performed on 24 subjects with primary hemochromatosis and one subject with sideroblastic anemia with severe iron overload. Iron 148-152 5'-aminolevulinate synthase 2 Homo sapiens 25-30 16446107-10 2006 Thus, ALAS2 mutations might contribute to more severe iron loading in persons with primary hemochromatosis. Iron 54-58 5'-aminolevulinate synthase 2 Homo sapiens 6-11 16343269-2 2006 An amino acid (AA) substitution for arginine at the 452 AA position of the ALAS2 protein is the most frequent mutation, which has been found in approximately one-quarter of patients with XLSA. Arginine 36-44 5'-aminolevulinate synthase 2 Homo sapiens 75-80 16234850-5 2005 ALAS2 is expressed exclusively in erythroid cells and synthesizes heme specifically for haemoglobin. Heme 66-70 5'-aminolevulinate synthase 2 Homo sapiens 0-5 16234850-6 2005 A database search for proteins potentially regulated by oxygen tension revealed that ALAS2 contained a sequence of amino acids (LXXLAP where L is leucine, X is any amino acid, A is alanine, and P is proline) not occurring in ALAS1, which may be hydroxylated under normoxic conditions (21% O2) and target the enzyme for ubiquitination and degradation by the proteasome. Oxygen 56-62 5'-aminolevulinate synthase 2 Homo sapiens 85-90 16234850-6 2005 A database search for proteins potentially regulated by oxygen tension revealed that ALAS2 contained a sequence of amino acids (LXXLAP where L is leucine, X is any amino acid, A is alanine, and P is proline) not occurring in ALAS1, which may be hydroxylated under normoxic conditions (21% O2) and target the enzyme for ubiquitination and degradation by the proteasome. Leucine 146-153 5'-aminolevulinate synthase 2 Homo sapiens 85-90 16234850-6 2005 A database search for proteins potentially regulated by oxygen tension revealed that ALAS2 contained a sequence of amino acids (LXXLAP where L is leucine, X is any amino acid, A is alanine, and P is proline) not occurring in ALAS1, which may be hydroxylated under normoxic conditions (21% O2) and target the enzyme for ubiquitination and degradation by the proteasome. Alanine 181-188 5'-aminolevulinate synthase 2 Homo sapiens 85-90 16234850-6 2005 A database search for proteins potentially regulated by oxygen tension revealed that ALAS2 contained a sequence of amino acids (LXXLAP where L is leucine, X is any amino acid, A is alanine, and P is proline) not occurring in ALAS1, which may be hydroxylated under normoxic conditions (21% O2) and target the enzyme for ubiquitination and degradation by the proteasome. Proline 199-206 5'-aminolevulinate synthase 2 Homo sapiens 85-90 16234850-6 2005 A database search for proteins potentially regulated by oxygen tension revealed that ALAS2 contained a sequence of amino acids (LXXLAP where L is leucine, X is any amino acid, A is alanine, and P is proline) not occurring in ALAS1, which may be hydroxylated under normoxic conditions (21% O2) and target the enzyme for ubiquitination and degradation by the proteasome. Oxygen 289-291 5'-aminolevulinate synthase 2 Homo sapiens 85-90 16234850-7 2005 We examined protein turnover of ALAS2 in the presence of cycloheximide in K562 cells. Cycloheximide 57-70 5'-aminolevulinate synthase 2 Homo sapiens 32-37 16234850-8 2005 Normoxic ALAS2 had a turnover time of approximately 36 h. Hypoxia (1% O2) and inhibition of the proteasome increased both the stability and the specific activity of ALAS2 (greater than 2- and 7-fold, respectively, over 72 h of treatment). Oxygen 70-72 5'-aminolevulinate synthase 2 Homo sapiens 9-14 16234850-8 2005 Normoxic ALAS2 had a turnover time of approximately 36 h. Hypoxia (1% O2) and inhibition of the proteasome increased both the stability and the specific activity of ALAS2 (greater than 2- and 7-fold, respectively, over 72 h of treatment). Oxygen 70-72 5'-aminolevulinate synthase 2 Homo sapiens 165-170 16234850-9 2005 Mutation of a key proline within the LXXLAP sequence of ALAS2 also stabilized the protein beyond 36 h under normoxic conditions. Proline 18-25 5'-aminolevulinate synthase 2 Homo sapiens 56-61 15885606-0 2005 Iron overload in an African American woman with SS hemoglobinopathy and a promoter mutation in the X-linked erythroid-specific 5-aminolevulinate synthase (ALAS2) gene. Iron 0-4 5'-aminolevulinate synthase 2 Homo sapiens 155-160 15885606-1 2005 We report the case of an African American woman with sickle cell anemia and iron overload incompletely explained by erythrocyte transfusion who is heterozygous for a promoter mutation in the X-linked erythroid-specific 5-aminolevulinate synthase gene (ALAS2): a C to G transversion at nucleotide -206 from the transcription start site, as defined by primer extension (-258 from the start ATG). Iron 76-80 5'-aminolevulinate synthase 2 Homo sapiens 252-257 15885606-6 2005 We conclude that an ALAS2 promoter region mutation could partly account for iron overload in the present proband, and that this or other ALAS2 mutations could explain the occurrence of iron overload in other whites or blacks with or without anemia. Iron 76-80 5'-aminolevulinate synthase 2 Homo sapiens 20-25 15885606-6 2005 We conclude that an ALAS2 promoter region mutation could partly account for iron overload in the present proband, and that this or other ALAS2 mutations could explain the occurrence of iron overload in other whites or blacks with or without anemia. Iron 185-189 5'-aminolevulinate synthase 2 Homo sapiens 137-142 15885606-7 2005 The occurrence of anemia and iron overload may be discordant in women heterozygous for ALAS2 mutations. Iron 29-33 5'-aminolevulinate synthase 2 Homo sapiens 87-92 15498136-3 2004 The full length cDNA of ALAS2 gene was inserted into plasmid pDs-red2-N1, named pDs-red2-N1/ALAS2. Palladium 61-64 5'-aminolevulinate synthase 2 Homo sapiens 92-97 15498136-3 2004 The full length cDNA of ALAS2 gene was inserted into plasmid pDs-red2-N1, named pDs-red2-N1/ALAS2. Palladium 80-83 5'-aminolevulinate synthase 2 Homo sapiens 24-29 15498136-3 2004 The full length cDNA of ALAS2 gene was inserted into plasmid pDs-red2-N1, named pDs-red2-N1/ALAS2. Palladium 80-83 5'-aminolevulinate synthase 2 Homo sapiens 92-97 15498136-8 2004 The result showed that after the pDs-red2-N1/ALAS2 eukaryotic expression vector was digested by KpnI and BamHI, two fragments of 4 700 bp and 1 764 bp were displayed by electrophoresis on agarose gel. Sepharose 188-195 5'-aminolevulinate synthase 2 Homo sapiens 45-50 14643893-0 2004 The major splice variant of human 5-aminolevulinate synthase-2 contributes significantly to erythroid heme biosynthesis. erythroid heme 92-106 5'-aminolevulinate synthase 2 Homo sapiens 34-62 14643893-1 2004 The initial step of the heme biosynthetic pathway in erythroid cells is catalyzed by an erythroid-specific isoform of 5-aminolevulinate synthase-2 (ALAS2). Heme 24-28 5'-aminolevulinate synthase 2 Homo sapiens 118-146 14643893-1 2004 The initial step of the heme biosynthetic pathway in erythroid cells is catalyzed by an erythroid-specific isoform of 5-aminolevulinate synthase-2 (ALAS2). Heme 24-28 5'-aminolevulinate synthase 2 Homo sapiens 148-153 14643893-3 2004 We sought to characterize the contribution of this ALAS2 isoform to overall erythroid heme biosynthesis. erythroid heme 76-90 5'-aminolevulinate synthase 2 Homo sapiens 51-56 14643893-7 2004 In contrast, in vitro studies show that the major splice variant (lacking exon 4-encoded sequence) produces a functional enzyme, albeit with slightly reduced activity and with affinity for the ATP-specific, beta subunit of succinyl CoA synthase, comparable to that of mature ALAS2. Adenosine Triphosphate 193-196 5'-aminolevulinate synthase 2 Homo sapiens 275-280 14643893-9 2004 We conclude that the major splice isoform of ALAS2 is functional in vivo and could significantly contribute to erythroid heme biosynthesis and hemoglobin formation. erythroid heme 111-125 5'-aminolevulinate synthase 2 Homo sapiens 45-50 12031592-7 2002 CONCLUSIONS: We identified a missense mutation in exon 5 of the ALAS2 gene in two brothers of a consanguineous marriage, who were clinically pyridoxine-responsive. Pyridoxine 141-151 5'-aminolevulinate synthase 2 Homo sapiens 64-69 12531813-5 2003 In vitro analyses of recombinant Asp159Asn ALAS2 revealed that this mutation accounted for the pyridoxine-responsiveness of this disease. Pyridoxine 95-105 5'-aminolevulinate synthase 2 Homo sapiens 43-48 12393745-1 2003 The erythroid-specific isoform of 5-aminolevulinate synthase (ALAS2) catalyzes the rate-limiting step in heme biosynthesis. Heme 105-109 5'-aminolevulinate synthase 2 Homo sapiens 62-67 12393718-1 2002 X-linked sideroblastic anemia (XLSA) is caused by mutations in the erythroid-specific 5-aminolevulinic acid synthase (ALAS2) gene. 5-amino levulinic acid 86-107 5'-aminolevulinate synthase 2 Homo sapiens 118-123 12382202-3 2002 Initially, mutations in ALAS2 in X-linked sideroblastic anemia (XLSA) focused attention on the heme biosynthetic pathway as a primary cause of sideroblastic anemia. Heme 95-99 5'-aminolevulinate synthase 2 Homo sapiens 24-29 12243984-2 2002 It does this via iron regulatory proteins (IRPs) which bind reversibly to the iron responsive elements (IREs) on the mRNA of transferrin receptor (TfR), erythroid 5-aminolaevulinic acid synthase (ALA-S2) and ferritin. Iron 17-21 5'-aminolevulinate synthase 2 Homo sapiens 196-202 12243984-2 2002 It does this via iron regulatory proteins (IRPs) which bind reversibly to the iron responsive elements (IREs) on the mRNA of transferrin receptor (TfR), erythroid 5-aminolaevulinic acid synthase (ALA-S2) and ferritin. Iron 78-82 5'-aminolevulinate synthase 2 Homo sapiens 196-202 11202048-14 2000 In the absence of iron, to be incorporated in the porphyrin formed in the last step of the synthesis, the mRNA of erythroid 5-aminolevulinate synthase (ALAS-2) is blocked by attachment of an iron-responsive element (IRE) binding cytosolic protein, and transcription of this key enzyme is inhibited. Iron 18-22 5'-aminolevulinate synthase 2 Homo sapiens 152-158 11929048-2 2002 It has been shown that a deficiency of the erythroid-specific delta-aminolevulinate synthase (ALAS-E) activity is responsible for pyridoxine-responsive HSA in many patients, however, the pathogenesis of other types of HSA remains still unknown. Pyridoxine 130-140 5'-aminolevulinate synthase 2 Homo sapiens 94-100 11566180-5 2001 In this study, we screened the specific genes expressed in the course of differentiation of HL-60 cells, and demonstrated that ASB-2, one of the ASB proteins, was rapidly induced by all-trans retinoic acid (ATRA). Tretinoin 192-205 5'-aminolevulinate synthase 2 Homo sapiens 127-130 11566180-5 2001 In this study, we screened the specific genes expressed in the course of differentiation of HL-60 cells, and demonstrated that ASB-2, one of the ASB proteins, was rapidly induced by all-trans retinoic acid (ATRA). Tretinoin 207-211 5'-aminolevulinate synthase 2 Homo sapiens 127-130 11110715-1 2000 X-linked sideroblastic anemia (XLSA) is caused by mutations in the erythroid-specific 5-aminolevulinic acid synthase (ALAS2) gene. 5-amino levulinic acid 86-107 5'-aminolevulinate synthase 2 Homo sapiens 118-123 11202048-14 2000 In the absence of iron, to be incorporated in the porphyrin formed in the last step of the synthesis, the mRNA of erythroid 5-aminolevulinate synthase (ALAS-2) is blocked by attachment of an iron-responsive element (IRE) binding cytosolic protein, and transcription of this key enzyme is inhibited. Iron 191-195 5'-aminolevulinate synthase 2 Homo sapiens 152-158 11877024-5 2000 The mutation in the patients" ALAS2 gene was exon 5 A523G, causing threonine to alanine; and exon 3 T372C, leucine to proline. Threonine 67-76 5'-aminolevulinate synthase 2 Homo sapiens 30-35 11877024-5 2000 The mutation in the patients" ALAS2 gene was exon 5 A523G, causing threonine to alanine; and exon 3 T372C, leucine to proline. Alanine 80-87 5'-aminolevulinate synthase 2 Homo sapiens 30-35 11877024-5 2000 The mutation in the patients" ALAS2 gene was exon 5 A523G, causing threonine to alanine; and exon 3 T372C, leucine to proline. Leucine 107-114 5'-aminolevulinate synthase 2 Homo sapiens 30-35 11877024-5 2000 The mutation in the patients" ALAS2 gene was exon 5 A523G, causing threonine to alanine; and exon 3 T372C, leucine to proline. Proline 118-125 5'-aminolevulinate synthase 2 Homo sapiens 30-35 10522552-7 1999 Because the 5"-untranslated region of the erythroid-specific ALA-S2 mRNA contains the iron-responsive element, a cis-acting sequence responsible for translational induction of erythroid ALA-S2 by iron, the availability of iron controls protoporphyrin IX levels in hemoglobin-synthesizing cells. Iron 86-90 5'-aminolevulinate synthase 2 Homo sapiens 61-67 11039663-1 2000 Erythroid 5-aminolevulinate synthase (ALAS-E) catalyzes the first step of heme biosynthesis in erythroid cells. Heme 74-78 5'-aminolevulinate synthase 2 Homo sapiens 38-44 11039663-2 2000 Several lines of evidence suggest that the expression of ALAS-E is important for the process of erythroid differentiation, which requires a large amount of heme for hemoglobin production. Heme 156-160 5'-aminolevulinate synthase 2 Homo sapiens 57-63 11039663-10 2000 These observations suggest that the mode of iron accumulation caused by the lack of ALAS-E is different in primitive and definitive erythroid cells. Iron 44-48 5'-aminolevulinate synthase 2 Homo sapiens 84-90 11039663-11 2000 Thus ALAS-E, and hence heme supply, is necessary for erythroid cell differentiation and iron metabolism. Iron 88-92 5'-aminolevulinate synthase 2 Homo sapiens 5-11 10727444-0 2000 Interaction between succinyl CoA synthetase and the heme-biosynthetic enzyme ALAS-E is disrupted in sideroblastic anemia. Heme 52-56 5'-aminolevulinate synthase 2 Homo sapiens 77-83 10727444-7 2000 Because the D190V mutant was identified in a patient with pyridoxine-refractory X-linked sideroblastic anemia, our findings suggest that appropriate association of SCS-betaA and ALAS-E promotes efficient use of succinyl CoA by ALAS-E or helps translocate ALAS-E into mitochondria. Pyridoxine 58-68 5'-aminolevulinate synthase 2 Homo sapiens 178-184 10727444-7 2000 Because the D190V mutant was identified in a patient with pyridoxine-refractory X-linked sideroblastic anemia, our findings suggest that appropriate association of SCS-betaA and ALAS-E promotes efficient use of succinyl CoA by ALAS-E or helps translocate ALAS-E into mitochondria. Pyridoxine 58-68 5'-aminolevulinate synthase 2 Homo sapiens 227-233 10727444-7 2000 Because the D190V mutant was identified in a patient with pyridoxine-refractory X-linked sideroblastic anemia, our findings suggest that appropriate association of SCS-betaA and ALAS-E promotes efficient use of succinyl CoA by ALAS-E or helps translocate ALAS-E into mitochondria. Pyridoxine 58-68 5'-aminolevulinate synthase 2 Homo sapiens 227-233 10727444-7 2000 Because the D190V mutant was identified in a patient with pyridoxine-refractory X-linked sideroblastic anemia, our findings suggest that appropriate association of SCS-betaA and ALAS-E promotes efficient use of succinyl CoA by ALAS-E or helps translocate ALAS-E into mitochondria. succinyl-coenzyme A 211-223 5'-aminolevulinate synthase 2 Homo sapiens 178-184 10727444-7 2000 Because the D190V mutant was identified in a patient with pyridoxine-refractory X-linked sideroblastic anemia, our findings suggest that appropriate association of SCS-betaA and ALAS-E promotes efficient use of succinyl CoA by ALAS-E or helps translocate ALAS-E into mitochondria. succinyl-coenzyme A 211-223 5'-aminolevulinate synthase 2 Homo sapiens 227-233 10727444-7 2000 Because the D190V mutant was identified in a patient with pyridoxine-refractory X-linked sideroblastic anemia, our findings suggest that appropriate association of SCS-betaA and ALAS-E promotes efficient use of succinyl CoA by ALAS-E or helps translocate ALAS-E into mitochondria. succinyl-coenzyme A 211-223 5'-aminolevulinate synthase 2 Homo sapiens 227-233 10522552-7 1999 Because the 5"-untranslated region of the erythroid-specific ALA-S2 mRNA contains the iron-responsive element, a cis-acting sequence responsible for translational induction of erythroid ALA-S2 by iron, the availability of iron controls protoporphyrin IX levels in hemoglobin-synthesizing cells. Iron 196-200 5'-aminolevulinate synthase 2 Homo sapiens 61-67 10522552-7 1999 Because the 5"-untranslated region of the erythroid-specific ALA-S2 mRNA contains the iron-responsive element, a cis-acting sequence responsible for translational induction of erythroid ALA-S2 by iron, the availability of iron controls protoporphyrin IX levels in hemoglobin-synthesizing cells. Iron 196-200 5'-aminolevulinate synthase 2 Homo sapiens 61-67 10522552-7 1999 Because the 5"-untranslated region of the erythroid-specific ALA-S2 mRNA contains the iron-responsive element, a cis-acting sequence responsible for translational induction of erythroid ALA-S2 by iron, the availability of iron controls protoporphyrin IX levels in hemoglobin-synthesizing cells. protoporphyrin IX 236-253 5'-aminolevulinate synthase 2 Homo sapiens 61-67 10577279-1 1999 A novel missense mutation, G663A, in exon 5 of the erythroid-specific delta-aminolevulinate synthase gene (ALAS2) was identified in a Japanese male with pyridoxine-responsive sideroblastic anemia. Pyridoxine 153-163 5'-aminolevulinate synthase 2 Homo sapiens 107-112 10582344-3 1999 The key rate-controlling enzyme of the heme biosynthetic pathway is 5-aminolevulinate synthase (ALAS) and an erythroid-specific isoform (ALAS2) is up-regulated during erythropoiesis. Heme 39-43 5'-aminolevulinate synthase 2 Homo sapiens 137-142 10582344-7 1999 Subsequent translation of the ALAS2 mRNA is dependent on an adequate iron supply. Iron 69-73 5'-aminolevulinate synthase 2 Homo sapiens 30-35 10029606-0 1999 Four new mutations in the erythroid-specific 5-aminolevulinate synthase (ALAS2) gene causing X-linked sideroblastic anemia: increased pyridoxine responsiveness after removal of iron overload by phlebotomy and coinheritance of hereditary hemochromatosis. Pyridoxine 134-144 5'-aminolevulinate synthase 2 Homo sapiens 73-78 10029606-0 1999 Four new mutations in the erythroid-specific 5-aminolevulinate synthase (ALAS2) gene causing X-linked sideroblastic anemia: increased pyridoxine responsiveness after removal of iron overload by phlebotomy and coinheritance of hereditary hemochromatosis. Iron 177-181 5'-aminolevulinate synthase 2 Homo sapiens 73-78 9858242-0 1998 R411C mutation of the ALAS2 gene encodes a pyridoxine-responsive enzyme with low activity. Pyridoxine 43-53 5'-aminolevulinate synthase 2 Homo sapiens 22-27 9858242-1 1998 A R411C missense mutation of the erythroid-specific delta-aminolaevulinate synthase (ALAS2) gene was identified in a pedigree with X-linked pyridoxine-responsive sideroblastic anaemia (XLSA). Pyridoxine 140-150 5'-aminolevulinate synthase 2 Homo sapiens 85-90 9526800-2 1997 delta-Aminolevulinate synthase (ALAS) plays the key role to regulate heme biosynthesis in hepatocytes as well as in erythroid cells. Heme 69-73 5'-aminolevulinate synthase 2 Homo sapiens 32-36 9688293-1 1998 DNA sequencing of the coding region of the erythroid 5-aminolaevulinate synthase (ALAS2) cDNA from a male with pyridoxine-responsive sideroblastic anaemia revealed a missense mutation, a G561T transversion in exon 5 of the gene. Pyridoxine 111-121 5'-aminolevulinate synthase 2 Homo sapiens 82-87 9488633-1 1998 DNA sequencing of the coding region of the erythroid 5-aminolaevulinate synthase (ALAS2) cDNA from a male with pyridoxine-responsive sideroblastic anaemia revealed a missense mutation C1622G and a closely linked polymorphism C1612A in exon 10 of the gene. Pyridoxine 111-121 5'-aminolevulinate synthase 2 Homo sapiens 82-87 9542324-1 1998 Pyridoxine-responsive, X-linked sideroblastic anaemia (XLSA) has been shown to be caused by missense mutations in the erythroid-specific ALA synthase gene, ALAS2. Pyridoxine 0-10 5'-aminolevulinate synthase 2 Homo sapiens 23-60 9542324-1 1998 Pyridoxine-responsive, X-linked sideroblastic anaemia (XLSA) has been shown to be caused by missense mutations in the erythroid-specific ALA synthase gene, ALAS2. Pyridoxine 0-10 5'-aminolevulinate synthase 2 Homo sapiens 156-161 9542324-7 1998 Mutations in the same gene which affect mitochondrial processing, terminate translation prematurely, or are thought to abolish function altogether cause an XLSA that is refractory to treatment with pyridoxine. Pyridoxine 198-208 5'-aminolevulinate synthase 2 Homo sapiens 156-160 9526800-3 1997 In the liver, nonspecific (or housekeeping) isozyme of ALAS (ALAS-N) is expressed to be regulated by its end product, heme, in a negative feedback manner. Heme 118-122 5'-aminolevulinate synthase 2 Homo sapiens 55-59 9526800-3 1997 In the liver, nonspecific (or housekeeping) isozyme of ALAS (ALAS-N) is expressed to be regulated by its end product, heme, in a negative feedback manner. Heme 118-122 5'-aminolevulinate synthase 2 Homo sapiens 61-65 9526800-4 1997 The way to regulate ALAS-N in the liver is suitable to supply a constant level of heme for a family of drug metabolizing enzymes, cytochrome P-450 (CYP). Heme 82-86 5'-aminolevulinate synthase 2 Homo sapiens 20-24 9526800-6 1997 Although heme regulates ALAS-N in a negative feedback manner even in erythroid cells, ALAS-E is upregulated by induced heme concentration. Heme 9-13 5'-aminolevulinate synthase 2 Homo sapiens 24-28 9526800-6 1997 Although heme regulates ALAS-N in a negative feedback manner even in erythroid cells, ALAS-E is upregulated by induced heme concentration. Heme 119-123 5'-aminolevulinate synthase 2 Homo sapiens 86-92 9526800-7 1997 ALAS-N in undifferentiated erythroid cells, therefore, is suggested to produce heme for CYP, whereas heme for accumulating hemoglobin (Hb) in cells undergoing differentiation is synthesized via ALAS-E. Heme 79-83 5'-aminolevulinate synthase 2 Homo sapiens 0-4 9526800-7 1997 ALAS-N in undifferentiated erythroid cells, therefore, is suggested to produce heme for CYP, whereas heme for accumulating hemoglobin (Hb) in cells undergoing differentiation is synthesized via ALAS-E. Heme 101-105 5'-aminolevulinate synthase 2 Homo sapiens 0-4 9526800-7 1997 ALAS-N in undifferentiated erythroid cells, therefore, is suggested to produce heme for CYP, whereas heme for accumulating hemoglobin (Hb) in cells undergoing differentiation is synthesized via ALAS-E. Heme 101-105 5'-aminolevulinate synthase 2 Homo sapiens 194-200 9226183-1 1997 To elucidate how pyridoxine-refractory X-linked sideroblastic anemia (XLSA) develops, we analyzed the erythroid-specific 5-aminolevulinate synthase (ALAS-E) gene of a patient with the anemia. Pyridoxine 17-27 5'-aminolevulinate synthase 2 Homo sapiens 149-155 9226183-6 1997 These results suggest that the mutation causing pyridoxine-refractory XLSA affects the processing of the ALAS-E precursor, thus provoking instability of the ALAS-E protein. Pyridoxine 48-58 5'-aminolevulinate synthase 2 Homo sapiens 105-111 9226183-6 1997 These results suggest that the mutation causing pyridoxine-refractory XLSA affects the processing of the ALAS-E precursor, thus provoking instability of the ALAS-E protein. Pyridoxine 48-58 5'-aminolevulinate synthase 2 Homo sapiens 157-163 9106619-0 1997 Protein tyrosine phosphatase-dependent activation of beta-globin and delta-aminolevulinic acid synthase genes in the camptothecin-induced IW32 erythroleukemia cell differentiation. Camptothecin 117-129 5'-aminolevulinate synthase 2 Homo sapiens 69-103 9106619-6 1997 Camptothecin-induced expression of beta-globin or ALAS-E transcript levels was inhibited in the presence of cycloheximide or vanadate. Camptothecin 0-12 5'-aminolevulinate synthase 2 Homo sapiens 50-56 9106619-6 1997 Camptothecin-induced expression of beta-globin or ALAS-E transcript levels was inhibited in the presence of cycloheximide or vanadate. Cycloheximide 108-121 5'-aminolevulinate synthase 2 Homo sapiens 50-56 9106619-6 1997 Camptothecin-induced expression of beta-globin or ALAS-E transcript levels was inhibited in the presence of cycloheximide or vanadate. Vanadates 125-133 5'-aminolevulinate synthase 2 Homo sapiens 50-56 9133617-1 1997 We examined the effect of hemin, TGF-beta1 and cytosine arabinoside (Ara-C) on the levels of mRNAs for the erythroid-specific 5-aminolevulinate synthase (ALAS-E) and gamma-globin in various human myelogenous leukemia cell lines. Cytarabine 47-67 5'-aminolevulinate synthase 2 Homo sapiens 154-160 9133617-1 1997 We examined the effect of hemin, TGF-beta1 and cytosine arabinoside (Ara-C) on the levels of mRNAs for the erythroid-specific 5-aminolevulinate synthase (ALAS-E) and gamma-globin in various human myelogenous leukemia cell lines. Cytarabine 69-74 5'-aminolevulinate synthase 2 Homo sapiens 154-160 9020366-1 1997 The coding region of the erythroid 5-aminolaevulinate synthetase gene (ALAS2) from a large pedigree with pyridoxine-responsive X-linked hereditary sideroblastic anaemia was examined for mutations. Pyridoxine 105-115 5'-aminolevulinate synthase 2 Homo sapiens 71-76 7560104-1 1995 Missense mutations in the erythroid delta-aminolevulinate synthase (ALAS2) gene in two pyridoxine-responsive patients initially diagnosed with acquired refractory anemia and ringed sideroblasts. Pyridoxine 87-97 5'-aminolevulinate synthase 2 Homo sapiens 68-73 9372069-5 1996 Speculation about their causes includes disturbed intracellular iron homeostasis involving iron-responsive factors involved in the translational control of ALAS2 and in certain nuclear and mitochondrial genes important for erythroid mitochondrial metabolism. Iron 64-68 5'-aminolevulinate synthase 2 Homo sapiens 156-161 9372069-5 1996 Speculation about their causes includes disturbed intracellular iron homeostasis involving iron-responsive factors involved in the translational control of ALAS2 and in certain nuclear and mitochondrial genes important for erythroid mitochondrial metabolism. Iron 91-95 5'-aminolevulinate synthase 2 Homo sapiens 156-161 7560104-5 1995 We report two unrelated cases of highly pyridoxine-responsive XLSA in geriatric patients previously diagnosed with refractory anemia and ringed sideroblasts. Pyridoxine 40-50 5'-aminolevulinate synthase 2 Homo sapiens 62-66 7560104-12 1995 This late-onset form of XLSA can be distinguished from refractory anemia and ringed sideroblasts by microcytosis, pyridoxine-responsiveness, and ALAS2 mutations. Pyridoxine 114-124 5'-aminolevulinate synthase 2 Homo sapiens 24-28 7560104-13 1995 These findings emphasize the need to consider all elderly patients with microcytic sideroblastic anemia as candidates for XLSA, especially if pyridoxine responsiveness is demonstrated. Pyridoxine 142-152 5'-aminolevulinate synthase 2 Homo sapiens 122-126 7592563-1 1995 The erythroid-specific isozyme of 5-aminolevulinate synthase (ALAS2), the first and rate-limiting enzyme of heme biosynthesis, is expressed concomitantly with the differentiation and maturation of the erythroid cell in order to accommodate generation of the large amounts of heme required for hemoglobin production. Heme 108-112 5'-aminolevulinate synthase 2 Homo sapiens 62-67 7616645-2 1995 delta-Aminolevulinate synthase (ALAS) plays the key role to regulate heme biosynthesis in the liver as well as in erythroid cells. Heme 69-73 5'-aminolevulinate synthase 2 Homo sapiens 32-36 7616645-3 1995 In the liver, nonspecific (or housekeeping) isozyme of ALAS (ALAS-N) is expressed to be regulated by its end product, heme, in the negative feedback manner. Heme 118-122 5'-aminolevulinate synthase 2 Homo sapiens 55-59 7616645-5 1995 For example, heme regulates ALAS-N and ALAS-E in the negative and in the positive feedback manner, respectively. Heme 13-17 5'-aminolevulinate synthase 2 Homo sapiens 39-45 7592563-1 1995 The erythroid-specific isozyme of 5-aminolevulinate synthase (ALAS2), the first and rate-limiting enzyme of heme biosynthesis, is expressed concomitantly with the differentiation and maturation of the erythroid cell in order to accommodate generation of the large amounts of heme required for hemoglobin production. Heme 275-279 5'-aminolevulinate synthase 2 Homo sapiens 62-67 7949148-2 1994 Almost 40 years later the enzymatic defect in XLSA was identified as the deficient activity of the erythroid-specific form of delta-aminolevulinate synthase (ALAS2), the first enzyme in the heme biosynthetic pathway. Heme 190-194 5'-aminolevulinate synthase 2 Homo sapiens 158-163 34492704-10 2021 We further show that itaconyl-CoA is a competitive inhibitor of the erythroid-specific 5-aminolevulinate synthase (ALAS2), the first and rate-limiting step in heme synthesis. Itaconyl-CoA 21-33 5'-aminolevulinate synthase 2 Homo sapiens 115-120 1301172-1 1992 We have identified a compound dinucleotide repeat within intron 7 of the human erythroid 5-aminolevulinate synthase (ALAS2) gene with a minimum of 9 alleles and heterozygosity of 78%. Dinucleoside Phosphates 30-42 5'-aminolevulinate synthase 2 Homo sapiens 117-122 1301172-4 1992 As ALAS2 has recently been shown to be the defective locus in X-linked pyridoxine-responsive sideroblastic anemia (PRSA), the ALAS2 marker has allowed placement of the gene for PRSA into the multipoint linkage map of the X chromosome. Pyridoxine 71-81 5'-aminolevulinate synthase 2 Homo sapiens 3-8 34490613-0 2022 Severe iron overload in a woman with homeostatic iron regulator (HFE) and a novel 5"-aminolevulinate synthase 2 (ALAS2) mutations: interactions of multiple genetic determinants. Iron 7-11 5'-aminolevulinate synthase 2 Homo sapiens 82-111 34490613-0 2022 Severe iron overload in a woman with homeostatic iron regulator (HFE) and a novel 5"-aminolevulinate synthase 2 (ALAS2) mutations: interactions of multiple genetic determinants. Iron 7-11 5'-aminolevulinate synthase 2 Homo sapiens 113-118 34492704-10 2021 We further show that itaconyl-CoA is a competitive inhibitor of the erythroid-specific 5-aminolevulinate synthase (ALAS2), the first and rate-limiting step in heme synthesis. Aminolevulinic Acid 87-104 5'-aminolevulinate synthase 2 Homo sapiens 115-120 34492704-10 2021 We further show that itaconyl-CoA is a competitive inhibitor of the erythroid-specific 5-aminolevulinate synthase (ALAS2), the first and rate-limiting step in heme synthesis. Heme 159-163 5'-aminolevulinate synthase 2 Homo sapiens 115-120 34492704-11 2021 These findings strongly support our hypothesis that the inhibition of heme synthesis observed in chronic inflammation is mediated not only by iron limitation, but also by limitation of tetrapyrrole synthesis at the point of ALAS2 catalysis by itaconate. Heme 70-74 5'-aminolevulinate synthase 2 Homo sapiens 224-229 34492704-11 2021 These findings strongly support our hypothesis that the inhibition of heme synthesis observed in chronic inflammation is mediated not only by iron limitation, but also by limitation of tetrapyrrole synthesis at the point of ALAS2 catalysis by itaconate. Tetrapyrroles 185-197 5'-aminolevulinate synthase 2 Homo sapiens 224-229 34492704-11 2021 These findings strongly support our hypothesis that the inhibition of heme synthesis observed in chronic inflammation is mediated not only by iron limitation, but also by limitation of tetrapyrrole synthesis at the point of ALAS2 catalysis by itaconate. itaconic acid 243-252 5'-aminolevulinate synthase 2 Homo sapiens 224-229 34781359-4 2022 Here, we successfully generated active wild-type and mutant ALAS2 induced pluripotent stem cell (iPSC) lines from the peripheral blood cells of an affected mother and two daughters in a family with pyridoxine-resistant XLSA due to a heterozygous ALAS2 missense mutation (R227C). Pyridoxine 198-208 5'-aminolevulinate synthase 2 Homo sapiens 60-65 34783528-2 2021 In the present work, we have systematically investigated the photochemical performance of the 2D beta-antimonene (beta-Sb) monolayer. 2d beta-antimonene 94-112 5'-aminolevulinate synthase 2 Homo sapiens 114-121 34783528-5 2021 Specifically, beta-Sb with single atom replacement has even superior that the reference catalysts IrO2(110) and Pt(111) with relatively low overpotential values for ORR and OER mechanisms. iridium oxide 98-102 5'-aminolevulinate synthase 2 Homo sapiens 14-21 34783528-5 2021 Specifically, beta-Sb with single atom replacement has even superior that the reference catalysts IrO2(110) and Pt(111) with relatively low overpotential values for ORR and OER mechanisms. Platinum 112-114 5'-aminolevulinate synthase 2 Homo sapiens 14-21 34783528-6 2021 The superior catalytic performance of beta-Sb has been described by its electronic structures, charge transfer mechanism, and suitable valence and conduction band edge positions versus normal hydrogen electrode. Hydrogen 192-200 5'-aminolevulinate synthase 2 Homo sapiens 38-45 34783528-7 2021 Meanwhile, the low overpotential of multifunctional photocatalysts of the Bi@beta-Sb monolayer makes them show a remarkable performance in overall water splitting (0.06 V for HER, 0.25 V for OER, and 0.31 V for ORR). Bismuth 74-76 5'-aminolevulinate synthase 2 Homo sapiens 77-84 34783528-7 2021 Meanwhile, the low overpotential of multifunctional photocatalysts of the Bi@beta-Sb monolayer makes them show a remarkable performance in overall water splitting (0.06 V for HER, 0.25 V for OER, and 0.31 V for ORR). Water 147-152 5'-aminolevulinate synthase 2 Homo sapiens 77-84 34783528-8 2021 In general, the Bi@beta-Sb monolayer may be an excellent trifunctional catalyst that exhibits high activity toward all electrode reactions of hydrogen and oxygen. Hydrogen 142-150 5'-aminolevulinate synthase 2 Homo sapiens 19-26 34783528-8 2021 In general, the Bi@beta-Sb monolayer may be an excellent trifunctional catalyst that exhibits high activity toward all electrode reactions of hydrogen and oxygen. Oxygen 155-161 5'-aminolevulinate synthase 2 Homo sapiens 19-26 34781359-4 2022 Here, we successfully generated active wild-type and mutant ALAS2 induced pluripotent stem cell (iPSC) lines from the peripheral blood cells of an affected mother and two daughters in a family with pyridoxine-resistant XLSA due to a heterozygous ALAS2 missense mutation (R227C). Pyridoxine 198-208 5'-aminolevulinate synthase 2 Homo sapiens 246-251 34781359-10 2022 Administration of a DNA demethylating agent, azacitidine, reactivated the silent wild-type ALAS2 allele in active mutant HPCs and ameliorated erythroid differentiation defects, suggesting that azacitidine is a potential novel therapeutic drug for female XLSA. Azacitidine 45-56 5'-aminolevulinate synthase 2 Homo sapiens 91-96 34781359-10 2022 Administration of a DNA demethylating agent, azacitidine, reactivated the silent wild-type ALAS2 allele in active mutant HPCs and ameliorated erythroid differentiation defects, suggesting that azacitidine is a potential novel therapeutic drug for female XLSA. Azacitidine 193-204 5'-aminolevulinate synthase 2 Homo sapiens 91-96 35054318-1 2022 Erythropoietic protoporphyria (EPP) and X-linked protoporphyria (XLP) are inherited disorders resulting from defects in two different enzymes of the heme biosynthetic pathway, i.e., ferrochelatase (FECH) and delta-aminolevulinic acid synthase-2 (ALAS2), respectively. Heme 149-153 5'-aminolevulinate synthase 2 Homo sapiens 208-244 34940556-3 2021 In the bone marrow, heme synthesis is mainly controlled by intracellular labile iron by post-transcriptional regulation: translation of ALAS2 mRNA, the first and rate-limiting enzyme of the pathway, is inhibited when iron availability is low. Heme 20-24 5'-aminolevulinate synthase 2 Homo sapiens 136-141 34940556-3 2021 In the bone marrow, heme synthesis is mainly controlled by intracellular labile iron by post-transcriptional regulation: translation of ALAS2 mRNA, the first and rate-limiting enzyme of the pathway, is inhibited when iron availability is low. Iron 80-84 5'-aminolevulinate synthase 2 Homo sapiens 136-141 34940556-3 2021 In the bone marrow, heme synthesis is mainly controlled by intracellular labile iron by post-transcriptional regulation: translation of ALAS2 mRNA, the first and rate-limiting enzyme of the pathway, is inhibited when iron availability is low. Iron 217-221 5'-aminolevulinate synthase 2 Homo sapiens 136-141 35054318-1 2022 Erythropoietic protoporphyria (EPP) and X-linked protoporphyria (XLP) are inherited disorders resulting from defects in two different enzymes of the heme biosynthetic pathway, i.e., ferrochelatase (FECH) and delta-aminolevulinic acid synthase-2 (ALAS2), respectively. Heme 149-153 5'-aminolevulinate synthase 2 Homo sapiens 246-251 35054318-5 2022 The erythroid-specific ALAS2 catalyses the synthesis of delta-aminolevulinic acid (ALA), from the union of glycine and succinyl-coenzyme A, in the first step of the pathway in the erythron. Aminolevulinic Acid 56-81 5'-aminolevulinate synthase 2 Homo sapiens 23-28 35054318-5 2022 The erythroid-specific ALAS2 catalyses the synthesis of delta-aminolevulinic acid (ALA), from the union of glycine and succinyl-coenzyme A, in the first step of the pathway in the erythron. Aminolevulinic Acid 83-86 5'-aminolevulinate synthase 2 Homo sapiens 23-28 35054318-5 2022 The erythroid-specific ALAS2 catalyses the synthesis of delta-aminolevulinic acid (ALA), from the union of glycine and succinyl-coenzyme A, in the first step of the pathway in the erythron. Glycine 107-114 5'-aminolevulinate synthase 2 Homo sapiens 23-28 35054318-5 2022 The erythroid-specific ALAS2 catalyses the synthesis of delta-aminolevulinic acid (ALA), from the union of glycine and succinyl-coenzyme A, in the first step of the pathway in the erythron. succinyl-coenzyme A 119-138 5'-aminolevulinate synthase 2 Homo sapiens 23-28 35054318-6 2022 In XLP, ALAS2 activity increases, resulting in the amplified formation of ALA, and iron becomes the rate-limiting factor for heme synthesis in the erythroid tissue. Aminolevulinic Acid 74-77 5'-aminolevulinate synthase 2 Homo sapiens 8-13 33596641-0 2021 A mutation in the iron-responsive element of ALAS2 is a modifier of disease severity in a patient suffering from CLPX associated erythropoietic protoporphyria. Iron 18-22 5'-aminolevulinate synthase 2 Homo sapiens 45-50 33281618-0 2020 A Novel ALAS2 Missense Mutation in Two Brothers With Iron Overload and Associated Alterations in Serum Hepcidin/Erythroferrone Levels. Iron 53-57 5'-aminolevulinate synthase 2 Homo sapiens 8-13 33659185-6 2021 The first and rate-limiting 5-aminolevulinate synthase 2 (ALAS2) enzyme controls heme synthesis and porphyrin production in erythroid cells, while iron availability modulates its expression through a post-transcriptional mechanism. Heme 81-85 5'-aminolevulinate synthase 2 Homo sapiens 58-63 33659185-6 2021 The first and rate-limiting 5-aminolevulinate synthase 2 (ALAS2) enzyme controls heme synthesis and porphyrin production in erythroid cells, while iron availability modulates its expression through a post-transcriptional mechanism. Iron 147-151 5'-aminolevulinate synthase 2 Homo sapiens 58-63 32678895-4 2020 One promising strategy to treat CEP is to reduce the erythroid production of porphyrins through substrate reduction therapy by inhibiting 5-aminolevulinate synthase 2 (ALAS2), the first and rate-limiting enzyme in the heme biosynthetic pathway. Porphyrins 77-87 5'-aminolevulinate synthase 2 Homo sapiens 138-166 32678895-4 2020 One promising strategy to treat CEP is to reduce the erythroid production of porphyrins through substrate reduction therapy by inhibiting 5-aminolevulinate synthase 2 (ALAS2), the first and rate-limiting enzyme in the heme biosynthetic pathway. Porphyrins 77-87 5'-aminolevulinate synthase 2 Homo sapiens 168-173 32678895-4 2020 One promising strategy to treat CEP is to reduce the erythroid production of porphyrins through substrate reduction therapy by inhibiting 5-aminolevulinate synthase 2 (ALAS2), the first and rate-limiting enzyme in the heme biosynthetic pathway. Heme 218-222 5'-aminolevulinate synthase 2 Homo sapiens 138-166 32678895-4 2020 One promising strategy to treat CEP is to reduce the erythroid production of porphyrins through substrate reduction therapy by inhibiting 5-aminolevulinate synthase 2 (ALAS2), the first and rate-limiting enzyme in the heme biosynthetic pathway. Heme 218-222 5'-aminolevulinate synthase 2 Homo sapiens 168-173 32678895-7 2020 Treatment of UROS-deficient erythroid cell lines and peripheral blood CD34+-derived erythroid cultures from a CEP patient with deferiprone inhibited iron-dependent protein ALAS2 and IRP2 expression and reduced porphyrin production. Deferiprone 127-138 5'-aminolevulinate synthase 2 Homo sapiens 172-177 32678895-7 2020 Treatment of UROS-deficient erythroid cell lines and peripheral blood CD34+-derived erythroid cultures from a CEP patient with deferiprone inhibited iron-dependent protein ALAS2 and IRP2 expression and reduced porphyrin production. Iron 149-153 5'-aminolevulinate synthase 2 Homo sapiens 172-177 33281618-7 2020 A novel pathogenic ALAS2 missense mutation (c.1382T>A, p.Leu461His) is described. leu461his 57-66 5'-aminolevulinate synthase 2 Homo sapiens 19-24 32499479-3 2020 Here, we report the human ALAS2 crystal structure, revealing that its Ct-extension folds onto the catalytic core, sits atop the active site, and precludes binding of substrate succinyl-CoA. succinyl-coenzyme A 176-188 5'-aminolevulinate synthase 2 Homo sapiens 26-31 33067979-5 2020 RESULTS: Compared with sh-NC group, knockdown of ALAS2 induced downregulation of BNIP3L mRNA and protein expression(P<0.01) and erythroid related transcription factors GATA1, Nrf2 expression, as well as reduction of ROS level(P<0.05). Reactive Oxygen Species 216-219 5'-aminolevulinate synthase 2 Homo sapiens 49-54 32499479-7 2020 These fragments represent a starting point to develop ALAS2 inhibitors as substrate reduction therapy for porphyria disorders that accumulate toxic heme intermediates. Heme 148-152 5'-aminolevulinate synthase 2 Homo sapiens 54-59 31823667-6 2020 Among them, the upregulated Bcl-associated X protein was related to "apoptosis," while the downregulated 5"-aminolevulinate synthase 2 (ALAS2) was related to both "glycine, serine, and threonine metabolism" and "porphyrin and chlorophyll metabolism" in pathway enrichment analysis. Glycine 164-171 5'-aminolevulinate synthase 2 Homo sapiens 105-134 31823667-6 2020 Among them, the upregulated Bcl-associated X protein was related to "apoptosis," while the downregulated 5"-aminolevulinate synthase 2 (ALAS2) was related to both "glycine, serine, and threonine metabolism" and "porphyrin and chlorophyll metabolism" in pathway enrichment analysis. Glycine 164-171 5'-aminolevulinate synthase 2 Homo sapiens 136-141 31823667-6 2020 Among them, the upregulated Bcl-associated X protein was related to "apoptosis," while the downregulated 5"-aminolevulinate synthase 2 (ALAS2) was related to both "glycine, serine, and threonine metabolism" and "porphyrin and chlorophyll metabolism" in pathway enrichment analysis. cholecystokinin C-terminal flanking peptide 173-179 5'-aminolevulinate synthase 2 Homo sapiens 105-134 31823667-6 2020 Among them, the upregulated Bcl-associated X protein was related to "apoptosis," while the downregulated 5"-aminolevulinate synthase 2 (ALAS2) was related to both "glycine, serine, and threonine metabolism" and "porphyrin and chlorophyll metabolism" in pathway enrichment analysis. cholecystokinin C-terminal flanking peptide 173-179 5'-aminolevulinate synthase 2 Homo sapiens 136-141 31823667-6 2020 Among them, the upregulated Bcl-associated X protein was related to "apoptosis," while the downregulated 5"-aminolevulinate synthase 2 (ALAS2) was related to both "glycine, serine, and threonine metabolism" and "porphyrin and chlorophyll metabolism" in pathway enrichment analysis. glycyl-threonine 185-194 5'-aminolevulinate synthase 2 Homo sapiens 105-134 31823667-6 2020 Among them, the upregulated Bcl-associated X protein was related to "apoptosis," while the downregulated 5"-aminolevulinate synthase 2 (ALAS2) was related to both "glycine, serine, and threonine metabolism" and "porphyrin and chlorophyll metabolism" in pathway enrichment analysis. glycyl-threonine 185-194 5'-aminolevulinate synthase 2 Homo sapiens 136-141 31823667-6 2020 Among them, the upregulated Bcl-associated X protein was related to "apoptosis," while the downregulated 5"-aminolevulinate synthase 2 (ALAS2) was related to both "glycine, serine, and threonine metabolism" and "porphyrin and chlorophyll metabolism" in pathway enrichment analysis. Porphyrins 212-221 5'-aminolevulinate synthase 2 Homo sapiens 105-134 31823667-6 2020 Among them, the upregulated Bcl-associated X protein was related to "apoptosis," while the downregulated 5"-aminolevulinate synthase 2 (ALAS2) was related to both "glycine, serine, and threonine metabolism" and "porphyrin and chlorophyll metabolism" in pathway enrichment analysis. Porphyrins 212-221 5'-aminolevulinate synthase 2 Homo sapiens 136-141 31823667-6 2020 Among them, the upregulated Bcl-associated X protein was related to "apoptosis," while the downregulated 5"-aminolevulinate synthase 2 (ALAS2) was related to both "glycine, serine, and threonine metabolism" and "porphyrin and chlorophyll metabolism" in pathway enrichment analysis. Chlorophyll 226-237 5'-aminolevulinate synthase 2 Homo sapiens 105-134 31823667-6 2020 Among them, the upregulated Bcl-associated X protein was related to "apoptosis," while the downregulated 5"-aminolevulinate synthase 2 (ALAS2) was related to both "glycine, serine, and threonine metabolism" and "porphyrin and chlorophyll metabolism" in pathway enrichment analysis. Chlorophyll 226-237 5'-aminolevulinate synthase 2 Homo sapiens 136-141 31823667-7 2020 CONCLUSIONS: ALAS2 and the metabolic pathways which were involved may play an important role in the development of epirubicin-induced cardiomyopathy. Epirubicin 115-125 5'-aminolevulinate synthase 2 Homo sapiens 13-18 31823667-8 2020 ALAS2 may be useful as an early biomarker for epirubicin-induced cardiotoxicity detection. Epirubicin 46-56 5'-aminolevulinate synthase 2 Homo sapiens 0-5 30098397-3 2019 The most prevalent form of CSA is X-linked sideroblastic anemia, caused by mutations in the erythroid-specific delta-aminolevulinate synthase (ALAS2), which is the first enzyme of the heme biosynthesis pathway in erythroid cells. Heme 184-188 5'-aminolevulinate synthase 2 Homo sapiens 143-148 30737140-6 2019 In erythroid cells, ALAS2 is a gatekeeper of production of very large amounts of heme necessary for hemoglobin synthesis. Heme 81-85 5'-aminolevulinate synthase 2 Homo sapiens 20-25 30737140-7 2019 The rate of ALAS2 synthesis is transiently increased during the period of active heme synthesis. Heme 81-85 5'-aminolevulinate synthase 2 Homo sapiens 12-17 30737140-9 2019 ALAS2 mRNA translation is also regulated by the iron-responsive element (IRE)/iron regulatory proteins (IRP) binding system. Iron 48-52 5'-aminolevulinate synthase 2 Homo sapiens 0-5 30737140-9 2019 ALAS2 mRNA translation is also regulated by the iron-responsive element (IRE)/iron regulatory proteins (IRP) binding system. Iron 78-82 5'-aminolevulinate synthase 2 Homo sapiens 0-5 30737140-11 2019 Decreased ALAS2 activity results either directly from loss-of-function ALAS2 mutations as seen in X-linked sideroblastic anemia (XLSA) or from defect in the availability of one of its two mitochondrial substrates: glycine in SLC25A38 mutations and succinyl CoA in GLRX5 mutations. Glycine 214-221 5'-aminolevulinate synthase 2 Homo sapiens 10-15 30737140-11 2019 Decreased ALAS2 activity results either directly from loss-of-function ALAS2 mutations as seen in X-linked sideroblastic anemia (XLSA) or from defect in the availability of one of its two mitochondrial substrates: glycine in SLC25A38 mutations and succinyl CoA in GLRX5 mutations. succinyl-coenzyme A 248-260 5'-aminolevulinate synthase 2 Homo sapiens 10-15 31076252-6 2019 When iron is limited, iron response element binding protein 2 (IRP2) binds to the IRE of ALAS2 mRNA and suppresses its translation. Iron 5-9 5'-aminolevulinate synthase 2 Homo sapiens 89-94 31076252-6 2019 When iron is limited, iron response element binding protein 2 (IRP2) binds to the IRE of ALAS2 mRNA and suppresses its translation. Iron 22-26 5'-aminolevulinate synthase 2 Homo sapiens 89-94 31076252-7 2019 In this study, we demonstrated that iron deprivation increased the amount of ALAS2 mRNA as well as the ratio of ALAS2 to FECH mRNAs in cultured erythroleukemic K562 cells. Iron 36-40 5'-aminolevulinate synthase 2 Homo sapiens 77-82 31076252-7 2019 In this study, we demonstrated that iron deprivation increased the amount of ALAS2 mRNA as well as the ratio of ALAS2 to FECH mRNAs in cultured erythroleukemic K562 cells. Iron 36-40 5'-aminolevulinate synthase 2 Homo sapiens 112-117 31076252-9 2019 A comparable increase in the ratio of ALAS2 to FECH mRNAs was also found in EPP patients indicating an imbalance in heme biosynthesis. Heme 116-120 5'-aminolevulinate synthase 2 Homo sapiens 38-43 31076252-10 2019 As iron cannot be completely missing from an organism, we assume that in EPP patients, a certain amount of ALAS2 mRNA is translated despite a partial deficiency of FECH. Iron 3-7 5'-aminolevulinate synthase 2 Homo sapiens 107-112 31076252-11 2019 The increase in ALAS2 enzyme contributes to the accumulation in PPIX in the patients. protoporphyrin IX 64-68 5'-aminolevulinate synthase 2 Homo sapiens 16-21 31395332-3 2019 Aminolevulinic acid synthase 2 (ALAS2), the rate limiting enzyme of the heme pathway in the erythron, is a therapeutic target in EPP because inhibiting enzyme function would reduce downstream production of protoporphyrin IX (PPIX), preventing accumulation of the toxic molecule and thereby ameliorating symptoms. Heme 72-76 5'-aminolevulinate synthase 2 Homo sapiens 0-30 31395332-3 2019 Aminolevulinic acid synthase 2 (ALAS2), the rate limiting enzyme of the heme pathway in the erythron, is a therapeutic target in EPP because inhibiting enzyme function would reduce downstream production of protoporphyrin IX (PPIX), preventing accumulation of the toxic molecule and thereby ameliorating symptoms. Heme 72-76 5'-aminolevulinate synthase 2 Homo sapiens 32-37 31395332-3 2019 Aminolevulinic acid synthase 2 (ALAS2), the rate limiting enzyme of the heme pathway in the erythron, is a therapeutic target in EPP because inhibiting enzyme function would reduce downstream production of protoporphyrin IX (PPIX), preventing accumulation of the toxic molecule and thereby ameliorating symptoms. protoporphyrin IX 206-223 5'-aminolevulinate synthase 2 Homo sapiens 0-30 31395332-3 2019 Aminolevulinic acid synthase 2 (ALAS2), the rate limiting enzyme of the heme pathway in the erythron, is a therapeutic target in EPP because inhibiting enzyme function would reduce downstream production of protoporphyrin IX (PPIX), preventing accumulation of the toxic molecule and thereby ameliorating symptoms. protoporphyrin IX 206-223 5'-aminolevulinate synthase 2 Homo sapiens 32-37 31395332-3 2019 Aminolevulinic acid synthase 2 (ALAS2), the rate limiting enzyme of the heme pathway in the erythron, is a therapeutic target in EPP because inhibiting enzyme function would reduce downstream production of protoporphyrin IX (PPIX), preventing accumulation of the toxic molecule and thereby ameliorating symptoms. protoporphyrin IX 225-229 5'-aminolevulinate synthase 2 Homo sapiens 0-30 31395332-3 2019 Aminolevulinic acid synthase 2 (ALAS2), the rate limiting enzyme of the heme pathway in the erythron, is a therapeutic target in EPP because inhibiting enzyme function would reduce downstream production of protoporphyrin IX (PPIX), preventing accumulation of the toxic molecule and thereby ameliorating symptoms. protoporphyrin IX 225-229 5'-aminolevulinate synthase 2 Homo sapiens 32-37 30765471-6 2019 In ABCB7-depleted cells, defective heme biosynthesis resulted from translational repression of ALAS2 by iron regulatory proteins and from decreased stability of the terminal enzyme ferrochelatase. Heme 35-39 5'-aminolevulinate synthase 2 Homo sapiens 95-100 30765471-6 2019 In ABCB7-depleted cells, defective heme biosynthesis resulted from translational repression of ALAS2 by iron regulatory proteins and from decreased stability of the terminal enzyme ferrochelatase. Iron 104-108 5'-aminolevulinate synthase 2 Homo sapiens 95-100 31059917-8 2019 B[a]P was positively correlated with an increased expression of a heme biosynthesis gene, ALAS2, which in turn, appears to promote concurrent increase of neutrophilic metamyelocyte and mature CD71low erythroid cells. Heme 66-70 5'-aminolevulinate synthase 2 Homo sapiens 90-95 29991557-4 2018 Based upon the observation that 1 subunit of succinyl-CoA synthetase (SCS) physically interacts with the first enzyme of heme synthesis (5-aminolevulinate synthase 2, ALAS2) in erythroid cells, it has been posited that succinyl-CoA for ALA synthesis is provided by the adenosine triphosphate-dependent reverse SCS reaction. Heme 121-125 5'-aminolevulinate synthase 2 Homo sapiens 167-172 30678654-6 2019 RESULTS: The five ALAS2 single nucleotide variants had from 1.3- to 1.9-fold increases in succinyl-CoA Vmax and 2- to 3-fold increases in thermostability suggesting that most could be gain-of-function modifiers of porphyria instead of causes. succinyl-coenzyme A 90-102 5'-aminolevulinate synthase 2 Homo sapiens 18-23 30678654-8 2019 The five novel ALAS2 truncation mutations had increased Vmax values for both succinyl-CoA and glycine substrates (1.4 to 5.6-fold over wild-type), while the Kms for both substrates were only modestly changed. succinyl-coenzyme A 77-89 5'-aminolevulinate synthase 2 Homo sapiens 15-20 30678654-8 2019 The five novel ALAS2 truncation mutations had increased Vmax values for both succinyl-CoA and glycine substrates (1.4 to 5.6-fold over wild-type), while the Kms for both substrates were only modestly changed. Glycine 94-101 5'-aminolevulinate synthase 2 Homo sapiens 15-20 30678654-11 2019 A key region of the ALAS2 carboxyterminal region is identified by the truncation mutations studied here and the correlation of increased thermolability with activity suggests that increased molecular flexibility/active site openness is the mechanism of enhanced function of mutations in this region providing further insights into the role of the carboxyl-terminal region of ALAS2 in the regulation of erythroid heme synthesis. Heme 412-416 5'-aminolevulinate synthase 2 Homo sapiens 20-25 30678654-11 2019 A key region of the ALAS2 carboxyterminal region is identified by the truncation mutations studied here and the correlation of increased thermolability with activity suggests that increased molecular flexibility/active site openness is the mechanism of enhanced function of mutations in this region providing further insights into the role of the carboxyl-terminal region of ALAS2 in the regulation of erythroid heme synthesis. Heme 412-416 5'-aminolevulinate synthase 2 Homo sapiens 375-380 29929070-11 2018 Higher MMP-2 concentrations were detected for the groups that did not undergo demineralization treatment, and the lowest values for the ASB groups treated with CAPE. caffeic acid phenethyl ester 160-164 5'-aminolevulinate synthase 2 Homo sapiens 136-139 29929070-15 2018 Immunoassay analysis showed that CAPE 0.1% reduced the MMP-2 concentration in the ASB adhesive without affecting bond strength to dentin. caffeic acid phenethyl ester 33-37 5'-aminolevulinate synthase 2 Homo sapiens 82-85 30217463-1 2018 A previously disclosed protein kinase (PK) CK2-selective inhibitor 4-(2-amino-1,3-thiazol-5-yl)benzoic acid (ATB) and its selenium-containing counterpart (ASB) revealed remarkable room temperature phosphorescence when bound to the ATP pocket of the protein kinase CK2. CHEMBL4166028 67-107 5'-aminolevulinate synthase 2 Homo sapiens 155-158 30217463-1 2018 A previously disclosed protein kinase (PK) CK2-selective inhibitor 4-(2-amino-1,3-thiazol-5-yl)benzoic acid (ATB) and its selenium-containing counterpart (ASB) revealed remarkable room temperature phosphorescence when bound to the ATP pocket of the protein kinase CK2. atb 109-112 5'-aminolevulinate synthase 2 Homo sapiens 155-158 30217463-1 2018 A previously disclosed protein kinase (PK) CK2-selective inhibitor 4-(2-amino-1,3-thiazol-5-yl)benzoic acid (ATB) and its selenium-containing counterpart (ASB) revealed remarkable room temperature phosphorescence when bound to the ATP pocket of the protein kinase CK2. Selenium 122-130 5'-aminolevulinate synthase 2 Homo sapiens 155-158 30217463-1 2018 A previously disclosed protein kinase (PK) CK2-selective inhibitor 4-(2-amino-1,3-thiazol-5-yl)benzoic acid (ATB) and its selenium-containing counterpart (ASB) revealed remarkable room temperature phosphorescence when bound to the ATP pocket of the protein kinase CK2. Adenosine Triphosphate 231-234 5'-aminolevulinate synthase 2 Homo sapiens 155-158 29991557-4 2018 Based upon the observation that 1 subunit of succinyl-CoA synthetase (SCS) physically interacts with the first enzyme of heme synthesis (5-aminolevulinate synthase 2, ALAS2) in erythroid cells, it has been posited that succinyl-CoA for ALA synthesis is provided by the adenosine triphosphate-dependent reverse SCS reaction. succinyl-coenzyme A 45-57 5'-aminolevulinate synthase 2 Homo sapiens 167-172 29991557-4 2018 Based upon the observation that 1 subunit of succinyl-CoA synthetase (SCS) physically interacts with the first enzyme of heme synthesis (5-aminolevulinate synthase 2, ALAS2) in erythroid cells, it has been posited that succinyl-CoA for ALA synthesis is provided by the adenosine triphosphate-dependent reverse SCS reaction. Adenosine Triphosphate 269-291 5'-aminolevulinate synthase 2 Homo sapiens 167-172 29743399-0 2018 [Successful treatment of X-linked sideroblastic anemia with ALAS2 R452H mutation using vitamin B6]. Vitamin B 6 87-97 5'-aminolevulinate synthase 2 Homo sapiens 60-65 27838491-1 2017 Mutations in the C-terminus of human erythroid 5-aminolevulinate synthase (hALAS2), a pyridoxal 5"-phosphate (PLP)-dependent enzyme, are associated with two different blood disorders, X-linked sideroblastic anemia (XLSA) and X-linked protoporphyria (XLPP). Pyridoxal Phosphate 86-108 5'-aminolevulinate synthase 2 Homo sapiens 75-81 30305500-3 2018 The most common form of CSA is X-linked sideroblastic anemia; it occurs because of mutations in the erythroid-specific delta-aminolevulinate synthase gene (ALAS2), which is the first enzyme of the heme biosynthesis pathway in erythroid cells. Heme 197-201 5'-aminolevulinate synthase 2 Homo sapiens 156-161 28667034-0 2017 A Novel ALAS2 Mutation Resulting in Variable Phenotypes and Pyridoxine Response in a Family with X-linked Sideroblastic Anemia. Pyridoxine 60-70 5'-aminolevulinate synthase 2 Homo sapiens 8-13 28667034-4 2017 We assume that this amino acid substitution affects the enzymatic activity of ALAS2 by affecting its interaction with the cofactor pyridoxal 5"-phosphate, since the patient was responsive to pyridoxine treatment. Pyridoxal Phosphate 131-153 5'-aminolevulinate synthase 2 Homo sapiens 78-83 28667034-4 2017 We assume that this amino acid substitution affects the enzymatic activity of ALAS2 by affecting its interaction with the cofactor pyridoxal 5"-phosphate, since the patient was responsive to pyridoxine treatment. Pyridoxine 191-201 5'-aminolevulinate synthase 2 Homo sapiens 78-83 28118224-6 2017 The treatment of hepatic porphyrias by an RNAi-targeting hepatic ALAS1 is actually tested and may lead to improve the management of acute attacks.In erythropoietic porphyrias, the key role of ALAS2 as a gate keeper of the heme and subsequently hemoglobin synthesis has been demonstrated. Heme 222-226 5'-aminolevulinate synthase 2 Homo sapiens 192-197 27838491-4 2017 Isonicotinic acid hydrazide (isoniazid, INH), an antituberculosis agent, can cause sideroblastic anemia as a side-effect, by limiting PLP availability to hALAS2, via inhibition of pyridoxal kinase or reaction with pyridoxal to form pyridoxal isonicotinoyl hydrazone. Isoniazid 0-27 5'-aminolevulinate synthase 2 Homo sapiens 154-160 27838491-4 2017 Isonicotinic acid hydrazide (isoniazid, INH), an antituberculosis agent, can cause sideroblastic anemia as a side-effect, by limiting PLP availability to hALAS2, via inhibition of pyridoxal kinase or reaction with pyridoxal to form pyridoxal isonicotinoyl hydrazone. Isoniazid 29-38 5'-aminolevulinate synthase 2 Homo sapiens 154-160 27838491-7 2017 In addition, PLP and pyridoxamine 5"-phosphate (PMP) reversed the cellular inhibition of hALAS2 activity by INH. pyridoxamine phosphate 21-46 5'-aminolevulinate synthase 2 Homo sapiens 89-95 27838491-7 2017 In addition, PLP and pyridoxamine 5"-phosphate (PMP) reversed the cellular inhibition of hALAS2 activity by INH. pyridoxamine phosphate 48-51 5'-aminolevulinate synthase 2 Homo sapiens 89-95 28090037-6 2017 Treatment with rapamycin (100 nM) for 48 hours significantly increased %number of hemoglobin-producing cells, gamma-globin mRNA levels, erythroid specific 5-aminolevulinate synthase (ALAS2) mRNA levels, and heme content in K562 cells. Sirolimus 15-24 5'-aminolevulinate synthase 2 Homo sapiens 183-188 26969896-5 2016 A more pronounced endogenous production of porphyrins concomitant to activation of ALAS2, the first and rate-limiting of the haem synthesis enzymes in erythroid cells, has also been reported. Porphyrins 43-53 5'-aminolevulinate synthase 2 Homo sapiens 83-88 27247955-8 2016 The in vitro prokaryotic expression showed that the p.Leu406Phe and p.Tyr500Cys mutations reduced the ALAS2 specific activity (SA) to 14% and 7% of the control value, respectively. sa 127-129 5'-aminolevulinate synthase 2 Homo sapiens 102-107 26698166-3 2016 To meet the intense demand for hemoglobin assembly in red blood cells, the cell type-specific factor GATA-1 activates transcription of Alas2, encoding the rate-limiting enzyme in heme biosynthesis, 5-aminolevulinic acid synthase-2 (ALAS-2). Heme 179-183 5'-aminolevulinate synthase 2 Homo sapiens 135-140 26698166-3 2016 To meet the intense demand for hemoglobin assembly in red blood cells, the cell type-specific factor GATA-1 activates transcription of Alas2, encoding the rate-limiting enzyme in heme biosynthesis, 5-aminolevulinic acid synthase-2 (ALAS-2). Heme 179-183 5'-aminolevulinate synthase 2 Homo sapiens 198-230 26698166-3 2016 To meet the intense demand for hemoglobin assembly in red blood cells, the cell type-specific factor GATA-1 activates transcription of Alas2, encoding the rate-limiting enzyme in heme biosynthesis, 5-aminolevulinic acid synthase-2 (ALAS-2). Heme 179-183 5'-aminolevulinate synthase 2 Homo sapiens 232-238 26698166-5 2016 CRISPR/Cas9-mediated ablation of two Alas2 intronic cis elements strongly reduces GATA-1-induced Alas2 transcription, heme biosynthesis, and surprisingly, GATA-1 regulation of other vital constituents of the erythroid cell transcriptome. Heme 118-122 5'-aminolevulinate synthase 2 Homo sapiens 37-42 26698166-6 2016 Bypassing ALAS-2 function in Alas2 cis element-mutant cells by providing its catalytic product 5-aminolevulinic acid rescues heme biosynthesis and the GATA-1-dependent genetic network. 5-amino levulinic acid 95-116 5'-aminolevulinate synthase 2 Homo sapiens 10-16 26698166-6 2016 Bypassing ALAS-2 function in Alas2 cis element-mutant cells by providing its catalytic product 5-aminolevulinic acid rescues heme biosynthesis and the GATA-1-dependent genetic network. 5-amino levulinic acid 95-116 5'-aminolevulinate synthase 2 Homo sapiens 29-34 26698166-6 2016 Bypassing ALAS-2 function in Alas2 cis element-mutant cells by providing its catalytic product 5-aminolevulinic acid rescues heme biosynthesis and the GATA-1-dependent genetic network. Heme 125-129 5'-aminolevulinate synthase 2 Homo sapiens 10-16 26698166-6 2016 Bypassing ALAS-2 function in Alas2 cis element-mutant cells by providing its catalytic product 5-aminolevulinic acid rescues heme biosynthesis and the GATA-1-dependent genetic network. Heme 125-129 5'-aminolevulinate synthase 2 Homo sapiens 29-34 25615817-1 2016 X-linked protoporphyria (XLP), a rare erythropoietic porphyria, results from terminal exon gain-of-function mutations in the ALAS2 gene causing increased ALAS2 activity and markedly increased erythrocyte protoporphyrin levels. protoporphyrin IX 204-218 5'-aminolevulinate synthase 2 Homo sapiens 125-130 26605136-1 2015 5-Aminolevulinate synthase (ALAS) catalyzes the initial step of mammalian heme biosynthesis, the condensation between glycine and succinyl-CoA to produce CoA, CO2, and 5-aminolevulinate. Heme 74-78 5'-aminolevulinate synthase 2 Homo sapiens 28-32 26702583-9 2016 Thus, Hspa9 depletion causes a mitochondrial ISC deficit, altering IRP1-IRE binding and FeCH stability, which consequently inhibits Alas2 translation, heme synthesis, and erythroid differentiation, i.e.: Hspa9->ISC->IRP/IRE->Alas2->heme synthesis->erythroid differentiation. Heme 244-248 5'-aminolevulinate synthase 2 Homo sapiens 132-137 26487704-6 2016 Expression levels of 221 genes were associated with strength after adjustment for cofactors and for multiple statistical testing, including ALAS2 (rate-limiting enzyme in heme synthesis), PRF1 (perforin, a cytotoxic protein associated with inflammation), IGF1R, and IGF2BP2 (both insulin like growth factor related). Heme 171-175 5'-aminolevulinate synthase 2 Homo sapiens 140-145 26703568-0 2015 MiR-218 Inhibits Erythroid Differentiation and Alters Iron Metabolism by Targeting ALAS2 in K562 Cells. mir-218 0-7 5'-aminolevulinate synthase 2 Homo sapiens 83-88 26703568-2 2015 The regulatory function and potential role of miRNAs targeting the mRNA of the 5"-aminolevulinate synthase 2 (ALAS2) in erythropoiesis were investigated in order to identify miRNAs which play a role in erythroid iron metabolism and differentiation. Iron 212-216 5'-aminolevulinate synthase 2 Homo sapiens 79-108 26703568-2 2015 The regulatory function and potential role of miRNAs targeting the mRNA of the 5"-aminolevulinate synthase 2 (ALAS2) in erythropoiesis were investigated in order to identify miRNAs which play a role in erythroid iron metabolism and differentiation. Iron 212-216 5'-aminolevulinate synthase 2 Homo sapiens 110-115 26703568-5 2015 Overexpression of miR-218 repressed erythroid differentiation and altered iron metabolism in K562 cells similar to that seen in the ALAS2 knockdown in K562 cells. mir-218 18-25 5'-aminolevulinate synthase 2 Homo sapiens 132-137 26703568-7 2015 Taken together, our results show that miR-218 inhibits erythroid differentiation and alters iron metabolism by targeting ALAS2 in K562 cells. mir-218 38-45 5'-aminolevulinate synthase 2 Homo sapiens 121-126 26703568-7 2015 Taken together, our results show that miR-218 inhibits erythroid differentiation and alters iron metabolism by targeting ALAS2 in K562 cells. Iron 92-96 5'-aminolevulinate synthase 2 Homo sapiens 121-126 26885114-0 2015 Delta-aminolevulinate synthase 2 polymorphism is associated with maximal oxygen uptake after Living-high exercise-high training-low in a male Chinese population. Oxygen 73-79 5'-aminolevulinate synthase 2 Homo sapiens 0-32 26885114-9 2015 CONCLUSIONS: The compound dinucleotide repeat polymorphism in ALAS2 intron 7 correlated with response to HiHiLo training. Dinucleoside Phosphates 26-38 5'-aminolevulinate synthase 2 Homo sapiens 62-67 26605136-1 2015 5-Aminolevulinate synthase (ALAS) catalyzes the initial step of mammalian heme biosynthesis, the condensation between glycine and succinyl-CoA to produce CoA, CO2, and 5-aminolevulinate. Glycine 118-125 5'-aminolevulinate synthase 2 Homo sapiens 28-32 26605136-1 2015 5-Aminolevulinate synthase (ALAS) catalyzes the initial step of mammalian heme biosynthesis, the condensation between glycine and succinyl-CoA to produce CoA, CO2, and 5-aminolevulinate. succinyl-coenzyme A 130-142 5'-aminolevulinate synthase 2 Homo sapiens 28-32 26605136-1 2015 5-Aminolevulinate synthase (ALAS) catalyzes the initial step of mammalian heme biosynthesis, the condensation between glycine and succinyl-CoA to produce CoA, CO2, and 5-aminolevulinate. Coenzyme A 139-142 5'-aminolevulinate synthase 2 Homo sapiens 28-32 26605136-1 2015 5-Aminolevulinate synthase (ALAS) catalyzes the initial step of mammalian heme biosynthesis, the condensation between glycine and succinyl-CoA to produce CoA, CO2, and 5-aminolevulinate. N2,N6-bis(4-(2-aminoethoxy)quinolin-2-yl)-4-((4-fluorobenzyl)oxy)pyridine-2,6-dicarboxamide 159-162 5'-aminolevulinate synthase 2 Homo sapiens 28-32 26605136-1 2015 5-Aminolevulinate synthase (ALAS) catalyzes the initial step of mammalian heme biosynthesis, the condensation between glycine and succinyl-CoA to produce CoA, CO2, and 5-aminolevulinate. Aminolevulinic Acid 168-185 5'-aminolevulinate synthase 2 Homo sapiens 28-32 26605136-3 2015 Loss-of-function mutations in the analogous lysine of human erythroid ALAS (ALAS2) cause X-linked sideroblastic anemia. Lysine 44-50 5'-aminolevulinate synthase 2 Homo sapiens 70-74 26605136-3 2015 Loss-of-function mutations in the analogous lysine of human erythroid ALAS (ALAS2) cause X-linked sideroblastic anemia. Lysine 44-50 5'-aminolevulinate synthase 2 Homo sapiens 76-81 26231844-3 2015 We hypothesized that increased heme accumulation (through cardiac overexpression of ALAS2) leads to increased oxidative stress and cell death in the heart. Heme 31-35 5'-aminolevulinate synthase 2 Homo sapiens 84-89 26300302-2 2015 Mutations in the C-terminal region of human erythroid-specific ALAS (hALAS2) are associated with X-linked protoporphyria (XLPP), a disease characterized by extreme photosensitivity, with elevated blood concentrations of free protoporphyrin IX and zinc protoporphyrin. xlpp 122-126 5'-aminolevulinate synthase 2 Homo sapiens 69-75 26300302-2 2015 Mutations in the C-terminal region of human erythroid-specific ALAS (hALAS2) are associated with X-linked protoporphyria (XLPP), a disease characterized by extreme photosensitivity, with elevated blood concentrations of free protoporphyrin IX and zinc protoporphyrin. protoporphyrin IX 225-242 5'-aminolevulinate synthase 2 Homo sapiens 69-75 26300302-2 2015 Mutations in the C-terminal region of human erythroid-specific ALAS (hALAS2) are associated with X-linked protoporphyria (XLPP), a disease characterized by extreme photosensitivity, with elevated blood concentrations of free protoporphyrin IX and zinc protoporphyrin. zinc protoporphyrin 247-266 5'-aminolevulinate synthase 2 Homo sapiens 69-75 26300302-8 2015 We propose that (1) the XLPP mutations destabilize the succinyl-CoA-induced hALAS2 closed conformation and thus accelerate ALA release, (2) the extended C-terminus of wild-type mammalian ALAS2 provides a regulatory role that allows for allosteric modulation of activity, thereby controlling the rate of erythroid heme biosynthesis, and (3) this control is disrupted in XLPP, resulting in porphyrin accumulation. succinyl-coenzyme A 55-67 5'-aminolevulinate synthase 2 Homo sapiens 76-82 26300302-8 2015 We propose that (1) the XLPP mutations destabilize the succinyl-CoA-induced hALAS2 closed conformation and thus accelerate ALA release, (2) the extended C-terminus of wild-type mammalian ALAS2 provides a regulatory role that allows for allosteric modulation of activity, thereby controlling the rate of erythroid heme biosynthesis, and (3) this control is disrupted in XLPP, resulting in porphyrin accumulation. succinyl-coenzyme A 55-67 5'-aminolevulinate synthase 2 Homo sapiens 77-82 26300302-8 2015 We propose that (1) the XLPP mutations destabilize the succinyl-CoA-induced hALAS2 closed conformation and thus accelerate ALA release, (2) the extended C-terminus of wild-type mammalian ALAS2 provides a regulatory role that allows for allosteric modulation of activity, thereby controlling the rate of erythroid heme biosynthesis, and (3) this control is disrupted in XLPP, resulting in porphyrin accumulation. Heme 313-317 5'-aminolevulinate synthase 2 Homo sapiens 76-82 26300302-8 2015 We propose that (1) the XLPP mutations destabilize the succinyl-CoA-induced hALAS2 closed conformation and thus accelerate ALA release, (2) the extended C-terminus of wild-type mammalian ALAS2 provides a regulatory role that allows for allosteric modulation of activity, thereby controlling the rate of erythroid heme biosynthesis, and (3) this control is disrupted in XLPP, resulting in porphyrin accumulation. Heme 313-317 5'-aminolevulinate synthase 2 Homo sapiens 77-82 26300302-8 2015 We propose that (1) the XLPP mutations destabilize the succinyl-CoA-induced hALAS2 closed conformation and thus accelerate ALA release, (2) the extended C-terminus of wild-type mammalian ALAS2 provides a regulatory role that allows for allosteric modulation of activity, thereby controlling the rate of erythroid heme biosynthesis, and (3) this control is disrupted in XLPP, resulting in porphyrin accumulation. Porphyrins 388-397 5'-aminolevulinate synthase 2 Homo sapiens 76-82 26300302-8 2015 We propose that (1) the XLPP mutations destabilize the succinyl-CoA-induced hALAS2 closed conformation and thus accelerate ALA release, (2) the extended C-terminus of wild-type mammalian ALAS2 provides a regulatory role that allows for allosteric modulation of activity, thereby controlling the rate of erythroid heme biosynthesis, and (3) this control is disrupted in XLPP, resulting in porphyrin accumulation. Porphyrins 388-397 5'-aminolevulinate synthase 2 Homo sapiens 77-82 26231844-7 2015 We confirmed in cultured cardiomyoblasts that the increased oxidative stress and cell death observed with ALAS2 overexpression is mediated by increased heme accumulation. Heme 152-156 5'-aminolevulinate synthase 2 Homo sapiens 106-111 26231844-8 2015 Furthermore, knockdown of ALAS2 in cultured cardiomyoblasts exposed to hypoxia reversed the increases in heme content and cell death. Heme 105-109 5'-aminolevulinate synthase 2 Homo sapiens 26-31 26231844-9 2015 Administration of the mitochondrial antioxidant MitoTempo to ALAS2-overexpressing cardiomyoblasts normalized the elevated oxidative stress and cell death levels to baseline, indicating that the effects of increased ALAS2 and heme are through elevated mitochondrial oxidative stress. MitoTEMPO 48-57 5'-aminolevulinate synthase 2 Homo sapiens 61-66 26231844-9 2015 Administration of the mitochondrial antioxidant MitoTempo to ALAS2-overexpressing cardiomyoblasts normalized the elevated oxidative stress and cell death levels to baseline, indicating that the effects of increased ALAS2 and heme are through elevated mitochondrial oxidative stress. MitoTEMPO 48-57 5'-aminolevulinate synthase 2 Homo sapiens 215-220 25547425-10 2015 The patient responded well to treatment, showing the pyridoxine responsiveness of this novel ALAS2 mutation. Pyridoxine 53-63 5'-aminolevulinate synthase 2 Homo sapiens 93-98 25972160-5 2015 Hypothesizing that iron restriction improved her symptoms by decreasing ALAS2 activity and subsequent porphyrin production, we treated the patient with off-label use of deferasirox to maintain iron deficiency, with successful results. Iron 19-23 5'-aminolevulinate synthase 2 Homo sapiens 72-77 25972160-5 2015 Hypothesizing that iron restriction improved her symptoms by decreasing ALAS2 activity and subsequent porphyrin production, we treated the patient with off-label use of deferasirox to maintain iron deficiency, with successful results. Deferasirox 169-180 5'-aminolevulinate synthase 2 Homo sapiens 72-77 25985931-11 2015 CONCLUSION: To our knowledge, the pyridoxine-effective mutation C471Y of ALAS2, the compound heterozygous mutation W87X, I143Pfs146X, and the homozygous mutation R134C of SLC25A38 were found for the first time. Pyridoxine 34-44 5'-aminolevulinate synthase 2 Homo sapiens 73-78 25705881-5 2015 We determined that this mutation (Y365C) impairs binding of the essential cofactor pyridoxal 5"-phosphate to ALAS2, resulting in destabilization of the enzyme and consequent loss of function. Pyridoxal Phosphate 83-105 5'-aminolevulinate synthase 2 Homo sapiens 109-114 24718052-4 2014 ALAS2 variants that cause high levels of PPIX accumulation provide a new means of targeted, and potentially enhanced, photosensitization. protoporphyrin IX 41-45 5'-aminolevulinate synthase 2 Homo sapiens 0-5 25482442-2 2015 The mechanism of mammalian heme synthesis has been studied for many years; aminolevulinate synthase 2 (ALAS2), a heme synthetase, is associated with X-linked dominant protoporphyria in humans. Heme 27-31 5'-aminolevulinate synthase 2 Homo sapiens 103-108 25179834-1 2015 The activity of the erythroid-specific isoenzyme of 5-aminolevulinic acid synthase (ALAS2), the first and rate-limiting enzyme in heme biosynthesis, is down-regulated during iron-deficiency. Heme 130-134 5'-aminolevulinate synthase 2 Homo sapiens 84-89 25179834-10 2015 Furthermore, we hypothesize that EPP patients may benefit from a mild iron deficiency since it would limit PPIX production by restricting ALAS2 over-expression. protoporphyrin IX 107-111 5'-aminolevulinate synthase 2 Homo sapiens 138-143 25450364-3 2014 ALAS2 is a mitochondrial enzyme, which utilizes glycine and succinyl-CoA to form 5-aminolevulinic acid (ALA), a crucial precursor in heme synthesis. Glycine 48-55 5'-aminolevulinate synthase 2 Homo sapiens 0-5 25450364-3 2014 ALAS2 is a mitochondrial enzyme, which utilizes glycine and succinyl-CoA to form 5-aminolevulinic acid (ALA), a crucial precursor in heme synthesis. succinyl-coenzyme A 60-72 5'-aminolevulinate synthase 2 Homo sapiens 0-5 25450364-3 2014 ALAS2 is a mitochondrial enzyme, which utilizes glycine and succinyl-CoA to form 5-aminolevulinic acid (ALA), a crucial precursor in heme synthesis. 5-amino levulinic acid 81-102 5'-aminolevulinate synthase 2 Homo sapiens 0-5 25450364-3 2014 ALAS2 is a mitochondrial enzyme, which utilizes glycine and succinyl-CoA to form 5-aminolevulinic acid (ALA), a crucial precursor in heme synthesis. Heme 133-137 5'-aminolevulinate synthase 2 Homo sapiens 0-5 25450364-4 2014 Therefore, ALA supplementation could be an effective therapeutic strategy to restore heme synthesis in CSA caused by ALAS2 defects. 5-amino levulinic acid 11-14 5'-aminolevulinate synthase 2 Homo sapiens 117-122 25450364-4 2014 Therefore, ALA supplementation could be an effective therapeutic strategy to restore heme synthesis in CSA caused by ALAS2 defects. Heme 85-89 5'-aminolevulinate synthase 2 Homo sapiens 117-122 25450364-15 2014 ALA may represent a novel therapeutic option for CSA treatment, particularly for cases harboring ALAS2 mutations. 5-amino levulinic acid 0-3 5'-aminolevulinate synthase 2 Homo sapiens 97-102 24718052-5 2014 In order to assess the prospective utility of ALAS2 variants in PPIX production for PDT, K562 human erythroleukemia cells and HeLa human cervical carcinoma cells were transfected with expression plasmids for ALAS2 variants with greater enzymatic activity than the wild-type enzyme. protoporphyrin IX 64-68 5'-aminolevulinate synthase 2 Homo sapiens 46-51 24718052-6 2014 The levels of accumulated PPIX in ALAS2-expressing cells were analyzed using flow cytometry with fluorescence detection. protoporphyrin IX 26-30 5'-aminolevulinate synthase 2 Homo sapiens 34-39 24718052-9 2014 Light treatments revealed that ALAS2 expression results in an increase in cell death in comparison to aminolevulinic acid (ALA) treatment producing a similar amount of PPIX. protoporphyrin IX 168-172 5'-aminolevulinate synthase 2 Homo sapiens 31-36 24509859-6 2014 IRP1 attenuates protoporphyrin biosynthesis by binding to the 5"-iron response element (IRE) of alas2 mRNA, inhibiting its translation. protoporphyrin IX 16-30 5'-aminolevulinate synthase 2 Homo sapiens 96-101 24509859-6 2014 IRP1 attenuates protoporphyrin biosynthesis by binding to the 5"-iron response element (IRE) of alas2 mRNA, inhibiting its translation. Iron 65-69 5'-aminolevulinate synthase 2 Homo sapiens 96-101 23935018-1 2014 Erythroid-specific 5-aminolevulinate synthase (ALAS2) is the rate-limiting enzyme for heme biosynthesis in erythroid cells, and a missense mutation of the ALAS2 gene is associated with congenital sideroblastic anemia. Heme 86-90 5'-aminolevulinate synthase 2 Homo sapiens 47-52 24166784-0 2014 X-linked sideroblastic anemia due to ALAS2 intron 1 enhancer element GATA-binding site mutations. gata 69-73 5'-aminolevulinate synthase 2 Homo sapiens 37-42 24166784-2 2014 In affected males, it is uniformly associated with partial loss-of-function missense mutations in the erythroid-specific heme biosynthesis protein 5-aminolevulinate synthase 2 (ALAS2). Heme 121-125 5'-aminolevulinate synthase 2 Homo sapiens 147-175 24166784-2 2014 In affected males, it is uniformly associated with partial loss-of-function missense mutations in the erythroid-specific heme biosynthesis protein 5-aminolevulinate synthase 2 (ALAS2). Heme 121-125 5'-aminolevulinate synthase 2 Homo sapiens 177-182 23935018-1 2014 Erythroid-specific 5-aminolevulinate synthase (ALAS2) is the rate-limiting enzyme for heme biosynthesis in erythroid cells, and a missense mutation of the ALAS2 gene is associated with congenital sideroblastic anemia. Heme 86-90 5'-aminolevulinate synthase 2 Homo sapiens 155-160 23935018-6 2014 Importantly, two mutations, each of which disrupts the GATA-binding site in the enhancer, were identified in unrelated male patients with congenital sideroblastic anemia, and the lower expression level of ALAS2 mRNA in bone marrow erythroblasts was confirmed in one of these patients. gata 55-59 5'-aminolevulinate synthase 2 Homo sapiens 205-210 24606657-10 2014 Our findings emphasized the importance of gene based diagnosis of CSA, and CSA patient with ALAS2 mutation responded to pyridoxine treatment. Pyridoxine 120-130 5'-aminolevulinate synthase 2 Homo sapiens 92-97