PMID-sentid Pub_year Sent_text comp_official_name comp_offset protein_name organism prot_offset 33921425-7 2021 The key component of this pathway is Mia40 (called CHCHD4 in human cells), which itself contains cysteine motifs and is subject to redox regulation. Cysteine 97-105 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 37-42 33921425-7 2021 The key component of this pathway is Mia40 (called CHCHD4 in human cells), which itself contains cysteine motifs and is subject to redox regulation. Cysteine 97-105 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 51-57 33835027-2 2021 Here, we demonstrate that loss of ALR, a principal component of the MIA40/ALR protein import pathway, results in impaired cytosolic Fe/S cluster biogenesis in mammalian cells. Iron 132-134 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 68-73 33835027-2 2021 Here, we demonstrate that loss of ALR, a principal component of the MIA40/ALR protein import pathway, results in impaired cytosolic Fe/S cluster biogenesis in mammalian cells. Sulfur 135-136 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 68-73 33599699-6 2021 Here, we summarise the recent advances made to our understanding of the role of CHCHD4 and the DRS in physiology and disease, with a specific focus on the emerging importance of CHCHD4 in regulating the cellular response to low oxygen (hypoxia) and metabolism in cancer. Oxygen 228-234 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 178-184 32762682-3 2020 The mitochondrial oxidoreductase MIA40, which catalyzes disulfide formation in the IMS, is imported by the combined action of the protein AIFM1 and MIA40 itself. Disulfides 56-65 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 33-38 32779864-3 2020 Here, we show that the CHCHD4/GFER disulfide relay system in the mitochondrial intermembrane space (IMS) is required for PINK1 stabilization when mitochondrial membrane potential is lost. Disulfides 35-44 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 23-29 32971361-0 2020 Glutathionylated and Fe-S cluster containing hMIA40 (CHCHD4) regulates ROS and mitochondrial complex III and IV activities of the electron transport chain. Iron 21-25 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 45-51 32971361-0 2020 Glutathionylated and Fe-S cluster containing hMIA40 (CHCHD4) regulates ROS and mitochondrial complex III and IV activities of the electron transport chain. Iron 21-25 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 53-59 32971361-0 2020 Glutathionylated and Fe-S cluster containing hMIA40 (CHCHD4) regulates ROS and mitochondrial complex III and IV activities of the electron transport chain. Reactive Oxygen Species 71-74 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 45-51 32971361-0 2020 Glutathionylated and Fe-S cluster containing hMIA40 (CHCHD4) regulates ROS and mitochondrial complex III and IV activities of the electron transport chain. Reactive Oxygen Species 71-74 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 53-59 32971361-2 2020 Site-directed mutagenesis complemented by MALDI on in vivo hMIA40 protein shows that a portion of MIA40 undergoes reversible S-glutathionylation at three cysteines in the twin CX9C motifs and the lone cysteine 4 residue. Cysteine 154-163 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 59-65 32971361-2 2020 Site-directed mutagenesis complemented by MALDI on in vivo hMIA40 protein shows that a portion of MIA40 undergoes reversible S-glutathionylation at three cysteines in the twin CX9C motifs and the lone cysteine 4 residue. Cysteine 154-163 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 60-65 32971361-2 2020 Site-directed mutagenesis complemented by MALDI on in vivo hMIA40 protein shows that a portion of MIA40 undergoes reversible S-glutathionylation at three cysteines in the twin CX9C motifs and the lone cysteine 4 residue. Cysteine 154-162 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 59-65 32971361-2 2020 Site-directed mutagenesis complemented by MALDI on in vivo hMIA40 protein shows that a portion of MIA40 undergoes reversible S-glutathionylation at three cysteines in the twin CX9C motifs and the lone cysteine 4 residue. Cysteine 154-162 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 60-65 32971361-3 2020 We find that HEK293T cells expressing hMIA40 mutant defective for glutathionylation are compromised in the activities of complexes III and IV of the Electron Transport Chain (ETC) and enhance Reactive Oxygen Species (ROS) levels. Reactive Oxygen Species 192-215 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 38-44 32971361-3 2020 We find that HEK293T cells expressing hMIA40 mutant defective for glutathionylation are compromised in the activities of complexes III and IV of the Electron Transport Chain (ETC) and enhance Reactive Oxygen Species (ROS) levels. Reactive Oxygen Species 217-220 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 38-44 32971361-7 2020 These results suggest that hMIA40 undergoes glutathionylation to maintain ROS levels and for optimum function of complexes III and IV of ETC. Reactive Oxygen Species 74-77 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 27-33 32762682-3 2020 The mitochondrial oxidoreductase MIA40, which catalyzes disulfide formation in the IMS, is imported by the combined action of the protein AIFM1 and MIA40 itself. Disulfides 56-65 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 148-153 32762682-9 2020 CONCLUSIONS: Our data suggest that the MIA40 precursor contains the stabilizing information to allow for postranslational import of sufficient amounts of MIA40 for full functionality of the essential disulfide relay. essential disulfide 190-209 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 39-44 32762682-9 2020 CONCLUSIONS: Our data suggest that the MIA40 precursor contains the stabilizing information to allow for postranslational import of sufficient amounts of MIA40 for full functionality of the essential disulfide relay. essential disulfide 190-209 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 154-159 31578585-10 2019 Overexpression of APE1 and Mia40 enhanced the cisplatin resistance and autophagy of the A549 cells. Cisplatin 46-55 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 27-32 32105825-4 2020 The redox-regulated CHCHD4/Mia40-dependent import machinery operates in the intermembrane space of the mitochondrion and controls the import of a set of nuclear-encoded cysteine-motif carrying protein substrates. Cysteine 169-177 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 20-26 32142475-4 2020 After this reaction, MIA40 is reoxidized by the sulfhydryl oxidase ALR, which couples disulfide formation by this machinery to the activity of the respiratory chain. Disulfides 86-95 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 21-26 30650365-5 2019 We demonstrate that unfolded reduced proteins, upon translocation into the IMS, initiate formation of a metastable disulfide-linked complex with CHCHD4. Disulfides 115-124 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 145-151 31346464-2 2019 The essential mitochondrial import protein coiled-coil helix coiled-coil helix domain-containing protein 4 (CHCHD4) controls respiratory chain complex activity and oxygen consumption, and regulates the growth of tumours in vivo. Oxygen 164-170 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 43-106 31346464-2 2019 The essential mitochondrial import protein coiled-coil helix coiled-coil helix domain-containing protein 4 (CHCHD4) controls respiratory chain complex activity and oxygen consumption, and regulates the growth of tumours in vivo. Oxygen 164-170 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 108-114 30886710-8 2019 We found that loss of CHCHD4 protects tumour cells from respiratory chain inhibition at CI, while elevated CHCHD4 expression in tumour cells leads to significantly increased sensitivity to CI inhibition, in part through the production of mitochondrial reactive oxygen species (ROS). Reactive Oxygen Species 252-275 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 107-113 30886710-8 2019 We found that loss of CHCHD4 protects tumour cells from respiratory chain inhibition at CI, while elevated CHCHD4 expression in tumour cells leads to significantly increased sensitivity to CI inhibition, in part through the production of mitochondrial reactive oxygen species (ROS). Reactive Oxygen Species 277-280 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 107-113 30338240-11 2018 Expression of CHCHD4, a key component of the disulphide relay system (DRS) involved in mitochondrial protein import within the intermembrane space (IMS) was elevated by pVHL re-expression alongside enhanced expression of respiratory chain subunits of complex I (NDUFB10) and complex IV (mtCO-2 and COX IV). disulphide 45-55 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 14-20 29789341-7 2018 Knockdown of Mia40, which introduces disulfide bonds into CHCH domain proteins, blocked mitochondrial import of CHCHD10. Disulfides 37-46 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 13-18 29789341-8 2018 Overexpression of Mia40 rescued mitochondrial import of CHCHD10 Q108P by enhancing disulfide-bond formation. Disulfides 83-92 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 18-23 29270408-6 2017 Most IMS proteins lack presequences and instead utilize the IMS receptor Mia40, which facilitates their translocation across the outer membrane in a reaction that is coupled to the formation of disulfide bonds within the protein. Disulfides 194-203 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 73-78 29241459-3 2017 However, the other essential protein, Mia40, was found to be absent or not required in some organisms, raising questions about how the disulfide relay functions in these organisms. Disulfides 135-144 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 38-43 29270408-8 2017 Mia40 fulfills two roles: First, it acts as a holdase, which is crucial in the import of IMS proteins and second, it functions as a foldase, introducing disulfide bonds into newly imported proteins, which induces and stabilizes their natively folded state. Disulfides 153-162 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 29208936-5 2017 Using an integrated real-time approach, including chromatography, fluorescence, CD, FTIR, SAXS, NMR, and MS analysis, we demonstrate that in this mitochondrial protein, the conformational switch between disordered and folded states is controlled by the formation of a single disulfide bond, both in the presence and in the absence of Mia40. Cadmium 80-82 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 334-339 29208936-5 2017 Using an integrated real-time approach, including chromatography, fluorescence, CD, FTIR, SAXS, NMR, and MS analysis, we demonstrate that in this mitochondrial protein, the conformational switch between disordered and folded states is controlled by the formation of a single disulfide bond, both in the presence and in the absence of Mia40. Disulfides 275-284 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 334-339 25956655-3 2015 Recent data demonstrate that APE1 interacts with the mitochondrial import and assembly protein Mia40 suggesting the involvement of a redox-assisted mechanism, dependent on the disulfide transfer system, to be responsible of APE1 trafficking into the mitochondria. Disulfides 176-185 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 95-100 28814504-6 2017 In reconstitution studies with reduced Tim13, Mia40, and Erv1, the addition of Osm1 and fumarate completes the disulfide exchange pathway that results in Tim13 oxidation. Fumarates 88-96 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 46-51 28814504-6 2017 In reconstitution studies with reduced Tim13, Mia40, and Erv1, the addition of Osm1 and fumarate completes the disulfide exchange pathway that results in Tim13 oxidation. Disulfides 111-120 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 46-51 28497026-8 2017 Mutation of the functionally important highly conserved cysteines within the Cys-Pro-Cys motif of CHCHD4 or inhibition of complex IV activity (by sodium azide) redistributes mitochondria from the perinuclear region toward the periphery of the cell and blocks HIF activation. Cysteine 56-65 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 98-104 28497026-8 2017 Mutation of the functionally important highly conserved cysteines within the Cys-Pro-Cys motif of CHCHD4 or inhibition of complex IV activity (by sodium azide) redistributes mitochondria from the perinuclear region toward the periphery of the cell and blocks HIF activation. Cys-Pro-Cys 77-88 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 98-104 26085103-1 2015 A redox-regulated import pathway consisting of Mia40 and Erv1 mediates the import of cysteine-rich proteins into the mitochondrial intermembrane space. Cysteine 85-93 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 47-52 26085103-2 2015 Mia40 is the oxidoreductase that inserts two disulfide bonds into the substrate simultaneously. Disulfides 45-54 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 26085103-3 2015 However, Mia40 has one redox-active cysteine pair, resulting in ambiguity about how Mia40 accepts numerous electrons during substrate oxidation. Cysteine 36-44 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 9-14 26085103-3 2015 However, Mia40 has one redox-active cysteine pair, resulting in ambiguity about how Mia40 accepts numerous electrons during substrate oxidation. Cysteine 36-44 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 84-89 26085103-6 2015 In addition, a ternary complex consisting of Erv1, Mia40, and substrate, linked by disulfide bonds, was not detected in vitro. Disulfides 83-92 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 51-56 26085103-9 2015 Therefore, these studies support that Mia40 functions as an electron sink to facilitate the insertion of two disulfide bonds into substrates. Disulfides 109-118 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 38-43 26214018-8 2015 The introduction of disulfides in the IMS is catalyzed by Mia40 that functions as a chaperone inducing their folding. Disulfides 20-30 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 58-63 26214018-10 2015 The solution NMR structure of Mia40 (and supporting biochemical experiments) showed that Mia40 is a novel type of disulfide donor whose recognition capacity for its substrates relies on a hydrophobic binding cleft found adjacent to a thiol active CPC motif. Disulfides 114-123 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 30-35 26214018-10 2015 The solution NMR structure of Mia40 (and supporting biochemical experiments) showed that Mia40 is a novel type of disulfide donor whose recognition capacity for its substrates relies on a hydrophobic binding cleft found adjacent to a thiol active CPC motif. Disulfides 114-123 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 89-94 26214018-10 2015 The solution NMR structure of Mia40 (and supporting biochemical experiments) showed that Mia40 is a novel type of disulfide donor whose recognition capacity for its substrates relies on a hydrophobic binding cleft found adjacent to a thiol active CPC motif. Sulfhydryl Compounds 234-239 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 30-35 26214018-10 2015 The solution NMR structure of Mia40 (and supporting biochemical experiments) showed that Mia40 is a novel type of disulfide donor whose recognition capacity for its substrates relies on a hydrophobic binding cleft found adjacent to a thiol active CPC motif. Sulfhydryl Compounds 234-239 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 89-94 26214018-12 2015 This consists of only 9 amino acids, found upstream or downstream of a unique Cys that is primed for docking to Mia40 when the substrate is accommodated in the Mia40 binding cleft. Cysteine 78-81 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 112-117 26214018-12 2015 This consists of only 9 amino acids, found upstream or downstream of a unique Cys that is primed for docking to Mia40 when the substrate is accommodated in the Mia40 binding cleft. Cysteine 78-81 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 160-165 26214018-14 2015 Identification of new Mia40 substrates (some even without the requirement of their cysteines) reveals an expanded chaperone-like activity of this protein in the IMS. Cysteine 83-92 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 22-27 26275620-0 2015 Human mitochondrial MIA40 (CHCHD4) is a component of the Fe-S cluster export machinery. Iron 57-61 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 20-25 26275620-0 2015 Human mitochondrial MIA40 (CHCHD4) is a component of the Fe-S cluster export machinery. Iron 57-61 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 27-33 26275620-4 2015 hMIA40 is an iron-binding protein with the ability to bind iron in vivo and in vitro. Iron 13-17 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-6 26275620-4 2015 hMIA40 is an iron-binding protein with the ability to bind iron in vivo and in vitro. Iron 59-63 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-6 26275620-5 2015 hMIA40 harbours CPC (Cys-Pro-Cys) motif-dependent Fe-S clusters that are sensitive to oxidation. cpc 16-19 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-6 26275620-5 2015 hMIA40 harbours CPC (Cys-Pro-Cys) motif-dependent Fe-S clusters that are sensitive to oxidation. Cys-Pro-Cys 21-32 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-6 26275620-5 2015 hMIA40 harbours CPC (Cys-Pro-Cys) motif-dependent Fe-S clusters that are sensitive to oxidation. Iron 50-54 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-6 26275620-6 2015 Depletion of hMIA40 results in accumulation of iron in mitochondria concomitant with decreases in the activity and stability of Fe-S-containing cytosolic enzymes. Iron 47-51 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 13-19 26275620-6 2015 Depletion of hMIA40 results in accumulation of iron in mitochondria concomitant with decreases in the activity and stability of Fe-S-containing cytosolic enzymes. Iron 128-132 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 13-19 26275620-8 2015 Taken together, our results demonstrate an indispensable role for hMIA40 for the export of Fe-S clusters from mitochondria. Iron 91-95 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 66-72 26387864-1 2015 The essential oxidoreductase Mia40/CHCHD4 mediates disulfide bond formation and protein folding in the mitochondrial intermembrane space. Disulfides 51-60 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 29-34 26387864-1 2015 The essential oxidoreductase Mia40/CHCHD4 mediates disulfide bond formation and protein folding in the mitochondrial intermembrane space. Disulfides 51-60 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 35-41 26387864-2 2015 Here, we investigated the interactome of Mia40 thereby revealing links between thiol-oxidation and apoptosis, energy metabolism, and Ca(2+) signaling. Sulfhydryl Compounds 79-84 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 41-46 26387864-4 2015 We examined the biogenesis of MICU1 and find that Mia40 introduces an intermolecular disulfide bond that links MICU1 and its inhibitory paralog MICU2 in a heterodimer. Disulfides 85-94 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 50-55 26371297-6 2015 Our new assignments include two CHCH-domain containing subunits that contain disulfide bridges between CX9C motifs; they are processed by the Mia40 oxidative-folding pathway in the intermembrane space and probably stabilize the membrane domain. Disulfides 77-86 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 142-147 26014136-3 2015 Reduced pancreatic ribonuclease A (rRNase), avian lysozyme, and riboflavin binding protein are all competent substrates of the Mia40/lfALR system, although they lack those sequence features previously thought to direct disulfide bond formation in cognate IMS substrates. Riboflavin 64-74 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 127-132 26014136-3 2015 Reduced pancreatic ribonuclease A (rRNase), avian lysozyme, and riboflavin binding protein are all competent substrates of the Mia40/lfALR system, although they lack those sequence features previously thought to direct disulfide bond formation in cognate IMS substrates. Disulfides 219-228 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 127-132 25956655-5 2015 It is composed by two main proteins: Mia40 is the oxidoreductase that catalyzes the formation of the disulfide bonds in the substrate, while ALR reoxidizes Mia40 after the import. Disulfides 101-110 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 37-42 25956655-6 2015 In this study, we demonstrated that: (i) APE1 and Mia40 interact through disulfide bond formation; and (ii) Mia40 expression levels directly affect APE1"s mitochondrial translocation and, consequently, play a role in the maintenance of mitochondrial DNA integrity. Disulfides 73-82 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 50-55 25956655-6 2015 In this study, we demonstrated that: (i) APE1 and Mia40 interact through disulfide bond formation; and (ii) Mia40 expression levels directly affect APE1"s mitochondrial translocation and, consequently, play a role in the maintenance of mitochondrial DNA integrity. Disulfides 73-82 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 108-113 24569988-1 2014 Mia40-catalyzed disulfide formation drives the import of many proteins into the mitochondria. Disulfides 16-25 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 25451030-1 2014 Mia40 (a mitochondrial import and assembly protein) catalyzes disulfide bond formation in proteins in the mitochondrial intermembrane space. Disulfides 62-71 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 25451030-2 2014 By using Cox17 (a mitochondrial copper-binding protein) as a natural substrate, we discovered that, in the presence of Mia40, the formation of native disulfides is strongly favored. Copper 32-38 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 119-124 25451030-2 2014 By using Cox17 (a mitochondrial copper-binding protein) as a natural substrate, we discovered that, in the presence of Mia40, the formation of native disulfides is strongly favored. Disulfides 150-160 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 119-124 25451030-3 2014 The catalytic mechanism of Mia40 involves a functional interplay between the chaperone site and the catalytic disulfide. Disulfides 110-119 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 27-32 25451030-4 2014 Mia40 forms a specific native disulfide in Cox17 much more rapidly than other disulfides, in particular, non-native ones, which originates from the recently described high affinity for hydrophobic regions near target cysteines and the long lifetime of the mixed disulfide. Disulfides 30-39 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 25451030-4 2014 Mia40 forms a specific native disulfide in Cox17 much more rapidly than other disulfides, in particular, non-native ones, which originates from the recently described high affinity for hydrophobic regions near target cysteines and the long lifetime of the mixed disulfide. Disulfides 78-88 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 25451030-4 2014 Mia40 forms a specific native disulfide in Cox17 much more rapidly than other disulfides, in particular, non-native ones, which originates from the recently described high affinity for hydrophobic regions near target cysteines and the long lifetime of the mixed disulfide. Disulfides 78-87 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 25451030-6 2014 We found that species with inadvertently formed incorrect disulfides are rebound by Mia40 and reshuffled, revealing a proofreading mechanism that is steered by the conformational folding of the substrate protein. Disulfides 58-68 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 84-89 24983157-4 2014 The catalytic cysteines of Mia40 display unusually low chemical reactivity, as expressed in conventional pK values and reduction potentials. Cysteine 14-23 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 27-32 24983157-5 2014 The stability of the mixed disulfide intermediate is coupled energetically with hydrophobic interactions between Mia40 and the substrate. Disulfides 27-36 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 113-118 24983157-6 2014 Based on these properties, we suggest a mechanism for Mia40, where the hydrophobic binding site is employed to select a substrate thiol for forming the initial mixed disulfide. Sulfhydryl Compounds 130-135 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 54-59 24983157-6 2014 Based on these properties, we suggest a mechanism for Mia40, where the hydrophobic binding site is employed to select a substrate thiol for forming the initial mixed disulfide. Disulfides 166-175 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 54-59 25392302-2 2015 The main component of this pathway is the oxidoreductase Mia40, which introduces disulfides into its substrates. Disulfides 81-91 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 57-62 25392302-5 2015 Here we demonstrate the presence of glutaredoxins in the IMS and show that limiting amounts of these glutaredoxins provide a kinetic barrier to prevent the thermodynamically feasible reduction of Mia40 substrates by the IMS glutathione pool. Glutathione 224-235 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 196-201 24569988-4 2014 Mia40 accelerates Cox19 folding through the specific recognition of the third Cys in the second helical CX9C motif and the subsequent oxidation of the inner disulfide bond. Cysteine 78-81 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 24569988-4 2014 Mia40 accelerates Cox19 folding through the specific recognition of the third Cys in the second helical CX9C motif and the subsequent oxidation of the inner disulfide bond. Disulfides 157-166 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 24569988-6 2014 The same intermediate dominates the pathway in the absence of Mia40, and chemical induction of an alpha-helical structure by trifluoroethanol suffices to accelerate productive folding and mimic the Mia40 folding template mechanism. Trifluoroethanol 125-141 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 198-203 24382809-7 2014 Insertion of nuclear-encoded mitochondrial proteins requires specific import pathways; we show that specific cysteine motifs, part of the Mia40/Erv1 mitochondrial import pathway, are present in PLP and are required for its insertion into mitochondria. Cysteine 109-117 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 138-143 24382809-10 2014 These physiological abnormalities are preventable by mutations in PLP cysteine motifs, a hallmark of the Mia40/Erv1 pathway. Cysteine 70-78 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 105-110 24407114-0 2014 Mia40 targets cysteines in a hydrophobic environment to direct oxidative protein folding in the mitochondria. Cysteine 14-23 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 24360785-5 2014 Mrp10 contains an unconventional proline-rich matrix-targeting sequence that renders import intermediates accessible to Mia40. Proline 33-40 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 120-125 24407114-1 2014 Mia40 catalyses the oxidative folding of disulphide-containing proteins in the mitochondria. disulphide 41-51 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 24407114-2 2014 The folding pathway is directed by the formation of the first mixed disulphide between Mia40 and its substrate. disulphide 68-78 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 87-92 24407114-5 2014 Cys36 of Cox17 forms the mixed disulphide in an extremely rapid reaction that is limited by the preceding complex formation with Mia40. disulphide 31-41 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 129-134 24407114-7 2014 Mia40 binds preferentially to hydrophobic regions and the dynamic nature of the non-covalent complex allows rapid reorientation for an optimal positioning of the reactive cysteine. Cysteine 171-179 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 24407114-8 2014 Mia40 thus uses the unique proximity between its substrate-binding site and the catalytic disulphide to select a particular cysteine for forming the critical initial mixed disulphide. disulphide 90-100 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 24407114-8 2014 Mia40 thus uses the unique proximity between its substrate-binding site and the catalytic disulphide to select a particular cysteine for forming the critical initial mixed disulphide. Cysteine 124-132 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 24407114-8 2014 Mia40 thus uses the unique proximity between its substrate-binding site and the catalytic disulphide to select a particular cysteine for forming the critical initial mixed disulphide. disulphide 172-182 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 24101517-2 2013 Here we report that the mammalian homolog of the yeast mitochondrial disulfide relay protein Mia40 (CHCHD4) is necessary for the respiratory-dependent translocation of p53 into the mitochondria. Disulfides 69-78 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 100-106 23834247-2 2013 Mia40 uses its redox active CPC motif to shuttle disulfides between its client proteins (newly imported proteins) and the thiol oxidase Erv1. Disulfides 49-59 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 23834247-5 2013 We show that Mia40 binds a [2Fe-2S] cluster in a dimer form with the cluster co-ordinated by the cysteine residues of the CPC motifs. Cysteine 97-105 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 13-18 23834247-6 2013 The biological relevance of the cofactor binding was confirmed in vivo by cysteine redox state and iron uptake analyses, which showed that a significant amount of cellular Mia40 binds iron in vivo. Cysteine 74-82 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 172-177 23834247-6 2013 The biological relevance of the cofactor binding was confirmed in vivo by cysteine redox state and iron uptake analyses, which showed that a significant amount of cellular Mia40 binds iron in vivo. Iron 99-103 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 172-177 23834247-6 2013 The biological relevance of the cofactor binding was confirmed in vivo by cysteine redox state and iron uptake analyses, which showed that a significant amount of cellular Mia40 binds iron in vivo. Iron 184-188 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 172-177 23834247-7 2013 Furthermore, our oxygen consumption results suggested that the Fe-S-containing Mia40 is not an electron donor for Erv1. Oxygen 17-23 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 79-84 23834247-7 2013 Furthermore, our oxygen consumption results suggested that the Fe-S-containing Mia40 is not an electron donor for Erv1. Iron 63-67 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 79-84 22901034-2 2013 This oxidative folding process depends on the disulfide donor/import receptor Mia40 and the flavin adenine dinucleotide oxidase Erv1 and concerns proteins involved in mitochondrial biogenesis, respiratory complex assembly, and metal transfer. Disulfides 46-55 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 78-83 22901034-7 2013 Furthermore, a more general role for Mia40 in recognizing substrates targeted to other compartments, or even without specific cysteine motifs, remains an intriguing possibility. Cysteine 126-134 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 37-42 23676665-3 2013 We developed assays to follow protein oxidation in living mammalian cells, which reveal that import and oxidative folding of proteins are kinetically and functionally coupled and depend on the oxidoreductase Mia40, the sulfhydryl oxidase augmenter of liver regeneration (ALR), and the intracellular glutathione pool. Glutathione 299-310 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 208-213 23790485-2 2013 Several proteins of the intermembrane space (IMS) are imported and localized through an oxidative process, being folded through the formation of structural disulfide bonds catalyzed by Mia40, and trapped in the IMS. Disulfides 156-165 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 185-190 22910915-2 2012 This process requires disulfide bond transfer from oxidized Mia40 to a substrate protein. Disulfides 22-31 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 60-65 23197653-3 2013 This system (consisting of two proteins, Gfer and Mia40) is involved in the mitochondrial import of Cys-rich proteins. Cysteine 100-103 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 50-55 23283984-2 2013 The oxidoreductase Mia40 is a central component of the pathway responsible for the transfer of disulfide bonds to intermembrane space precursor proteins, causing their oxidative folding. Disulfides 95-104 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 19-24 23283984-6 2013 Tim22 forms a disulfide-bonded intermediate with Mia40 upon import into mitochondria. Disulfides 14-23 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 49-54 23283984-8 2013 We propose that Mia40 not only is responsible for disulfide bond formation, but also assists the Tim22 protein in its integration into the inner membrane of mitochondria. Disulfides 50-59 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 16-21 24348563-2 2013 The main components of this disulfide relay machinery are the oxidoreductase Mia40 and the sulfhydryl oxidase Erv1/ALR. Disulfides 28-37 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 77-82 23019327-4 2012 The CHCH domain proteins are traditionally imported and trapped in the IMS by using a disulfide relay system mediated by Mia40 and Erv1. Disulfides 86-95 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 121-126 23019327-7 2012 By analysis of the CHCH domain cysteine mutants, we further show that they have distinct roles in binding to Mia40 in the IMS and proper folding of the protein. Cysteine 31-39 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 109-114 23019327-8 2012 The transient disulfide-bonded intermediate with Mia40 is formed preferentially between the second cysteine in helix 1, Cys(193), and the active site cysteine in Mia40, Cys(55). Disulfides 14-23 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 49-54 23019327-8 2012 The transient disulfide-bonded intermediate with Mia40 is formed preferentially between the second cysteine in helix 1, Cys(193), and the active site cysteine in Mia40, Cys(55). Disulfides 14-23 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 162-167 23019327-8 2012 The transient disulfide-bonded intermediate with Mia40 is formed preferentially between the second cysteine in helix 1, Cys(193), and the active site cysteine in Mia40, Cys(55). Cysteine 99-107 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 49-54 23019327-8 2012 The transient disulfide-bonded intermediate with Mia40 is formed preferentially between the second cysteine in helix 1, Cys(193), and the active site cysteine in Mia40, Cys(55). Cysteine 99-107 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 162-167 23019327-8 2012 The transient disulfide-bonded intermediate with Mia40 is formed preferentially between the second cysteine in helix 1, Cys(193), and the active site cysteine in Mia40, Cys(55). Cysteine 120-123 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 49-54 23019327-8 2012 The transient disulfide-bonded intermediate with Mia40 is formed preferentially between the second cysteine in helix 1, Cys(193), and the active site cysteine in Mia40, Cys(55). Cysteine 120-123 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 162-167 23019327-8 2012 The transient disulfide-bonded intermediate with Mia40 is formed preferentially between the second cysteine in helix 1, Cys(193), and the active site cysteine in Mia40, Cys(55). Cysteine 150-158 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 49-54 23019327-8 2012 The transient disulfide-bonded intermediate with Mia40 is formed preferentially between the second cysteine in helix 1, Cys(193), and the active site cysteine in Mia40, Cys(55). Cysteine 150-158 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 162-167 23019327-8 2012 The transient disulfide-bonded intermediate with Mia40 is formed preferentially between the second cysteine in helix 1, Cys(193), and the active site cysteine in Mia40, Cys(55). Cysteine 169-172 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 49-54 23186364-0 2013 Disulfide bond formation: sulfhydryl oxidase ALR controls mitochondrial biogenesis of human MIA40. Disulfides 0-9 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 92-97 22990235-2 2012 Substrates of Mia40 that were identified so far are of simple structure and receive one or two disulphide bonds. disulphide 95-105 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 14-19 22990235-4 2012 Atp23 contains ten cysteine residues which are oxidized during several rounds of interaction with Mia40. Cysteine 19-27 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 98-103 22990235-8 2012 Thus, Mia40 plays a much broader role in import and folding of polypeptides than previously expected and can serve as folding factor for proteins with complex disulphide patterns as well as for cysteine-free polypeptides. disulphide 159-169 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 6-11 22990235-8 2012 Thus, Mia40 plays a much broader role in import and folding of polypeptides than previously expected and can serve as folding factor for proteins with complex disulphide patterns as well as for cysteine-free polypeptides. Cysteine 194-202 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 6-11 22705944-0 2012 Glutathione redox potential in the mitochondrial intermembrane space is linked to the cytosol and impacts the Mia40 redox state. Glutathione 0-11 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 110-115 22842048-6 2012 These results suggest a model where the molecular interactions guiding the protein recognition between Mia40 and the disulfide-reduced CHCHD5 and CHCHD7 substrates occurs in vivo when the latter proteins are partially embedded in the protein import pore of the outer membrane of mitochondria. Disulfides 117-126 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 103-108 22918950-2 2012 The disulfide bond formation pathway is based on a relay of reactions involving disulfide transfer from the sulfhydryl oxidase Erv1 to Mia40 and from Mia40 to substrate proteins. Disulfides 4-13 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 135-140 22918950-2 2012 The disulfide bond formation pathway is based on a relay of reactions involving disulfide transfer from the sulfhydryl oxidase Erv1 to Mia40 and from Mia40 to substrate proteins. Disulfides 4-13 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 150-155 22918950-2 2012 The disulfide bond formation pathway is based on a relay of reactions involving disulfide transfer from the sulfhydryl oxidase Erv1 to Mia40 and from Mia40 to substrate proteins. Disulfides 80-89 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 135-140 22918950-2 2012 The disulfide bond formation pathway is based on a relay of reactions involving disulfide transfer from the sulfhydryl oxidase Erv1 to Mia40 and from Mia40 to substrate proteins. Disulfides 80-89 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 150-155 22918950-8 2012 Thus Mia40 in cooperation with Erv1 promotes the formation of two disulfide bonds in the substrate protein, ensuring the efficiency of oxidative folding in the intermembrane space of mitochondria. Disulfides 66-75 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 5-10 22705944-7 2012 Moreover, we show that the local E(GSH) contributes to the partially reduced redox state of the IMS oxidoreductase Mia40 in vivo. Glutathione 35-38 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 115-120 22612783-2 2012 Contrary to the endoplasmatic reticulum ER where several chaperones of the disulfide isomerase family exist, oxidative folding in the IMS is exclusively catalyzed by the oxoreductase Mia40 that recognizes a group of proteins with characteristic cysteine motifs organized in twin CX(3)C, twin CX(9)C or CX(2)C motifs. Cysteine 245-253 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 183-188 22296668-3 2012 The C-terminal FAD-binding domain of Erv1/ALR has an essential role in the import process by creating a transient intermolecular disulfide bond with Mia40. Disulfides 130-139 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 150-155 22296668-4 2012 The action of Mia40 is selective for the formation of both intra and intersubunit structural disulfide bonds of Erv1/ALR, but the complete maturation process requires additional binding of FAD. Disulfides 93-102 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 14-19 21700214-2 2011 Here, the structural and metal-binding properties of anamorsin and its interaction with Mia40, a well-known oxidoreductase involved in protein trapping in the mitochondrial intermembrane space (IMS), were characterized. Metals 25-30 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 88-93 22224850-1 2012 The oxidative folding mechanism in the intermembrane space of human mitochondria underpins a disulfide relay system consisting of the import receptor Mia40 and the homodimeric FAD-dependent thiol oxidase ALR. Disulfides 93-102 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 150-155 22224850-4 2012 The intermediate critical for the electron-transfer process implies the formation of a specific inter-subunit disulfide which exclusively allows electron flow from Mia40 to FAD. Disulfides 110-119 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 164-169 21865594-0 2011 Mia40-dependent oxidation of cysteines in domain I of Ccs1 controls its distribution between mitochondria and the cytosol. Cysteine 29-38 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 21865594-7 2011 In this study we detail the import and folding pathway of Ccs1 and characterize its interaction with the oxidoreductase of the mitochondrial disulfide relay Mia40. Disulfides 141-150 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 157-162 21865594-8 2011 We identify cysteines at positions 27 and 64 in domain I of Ccs1 as critical for mitochondrial import and interaction with Mia40. Cysteine 12-21 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 123-128 21865594-9 2011 On interaction with Mia40, these cysteines form a structural disulfide bond that stabilizes the overall fold of domain I. Cysteine 33-42 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 20-25 21865594-9 2011 On interaction with Mia40, these cysteines form a structural disulfide bond that stabilizes the overall fold of domain I. Disulfides 61-70 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 20-25 20849374-3 2011 Pathways that form disulfide bonds have now been unraveled in the bacterial periplasm (disulfide bond protein A [DsbA], DsbB, DsbC, DsbG, and DsbD), the endoplasmic reticulum (protein disulfide isomerase and Ero1), and the mitochondrial intermembrane space (Mia40 and Erv1). Disulfides 19-28 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 258-263 22214851-0 2012 Human CHCHD4 mitochondrial proteins regulate cellular oxygen consumption rate and metabolism and provide a critical role in hypoxia signaling and tumor progression. Oxygen 54-60 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 6-12 22214851-6 2012 CHCHD4.1 is identical to MIA40, the homolog of yeast Mia40, a key component of the mitochondrial disulfide relay system that regulates electron transfer to cytochrome c. Further analysis revealed that CHCHD4 proteins contain an evolutionarily conserved coiled-coil-helix-coiled-coil-helix (CHCH) domain important for mitochondrial localization. Disulfides 97-106 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-6 22214851-6 2012 CHCHD4.1 is identical to MIA40, the homolog of yeast Mia40, a key component of the mitochondrial disulfide relay system that regulates electron transfer to cytochrome c. Further analysis revealed that CHCHD4 proteins contain an evolutionarily conserved coiled-coil-helix-coiled-coil-helix (CHCH) domain important for mitochondrial localization. Disulfides 97-106 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 201-207 22214851-7 2012 Modulation of CHCHD4 protein expression in tumor cells regulated cellular oxygen consumption rate and metabolism. Oxygen 74-80 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 14-20 23091723-6 2012 Finally, the protein CHCHD4, which modulates cellular HIF-1alpha concentrations by promoting mitochondrial electron transport chain activity, has been proposed to exert its regulatory effect by affecting cellular oxygen availability. Oxygen 213-219 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 21-27 21383138-1 2011 Oxidative protein folding in the mitochondrial intermembrane space requires the transfer of a disulfide bond from MIA40 to the substrate. Disulfides 94-103 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 114-119 21383138-2 2011 During this process MIA40 is reduced and regenerated to a functional state through the interaction with the flavin-dependent sulfhydryl oxidase ALR. 4,6-dinitro-o-cresol 108-114 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 20-25 21383138-3 2011 Here we present the mechanistic basis of ALR-MIA40 interaction at atomic resolution by biochemical and structural analyses of the mitochondrial ALR isoform and its covalent mixed disulfide intermediate with MIA40. Disulfides 179-188 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 45-50 21383138-3 2011 Here we present the mechanistic basis of ALR-MIA40 interaction at atomic resolution by biochemical and structural analyses of the mitochondrial ALR isoform and its covalent mixed disulfide intermediate with MIA40. Disulfides 179-188 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 207-212 20537978-4 2011 Mia40 is maintained in an oxidized, active conformation by the sulfhydryl oxidase Erv1, a homodimeric flavoenzyme, which can form disulfide bonds de novo. Disulfides 130-139 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 20136511-4 2010 Tim40/Mia40 transfers disulfide bonds to newly imported IMS proteins by dithiol/disulfide exchange reactions involving mixed disulfide intermediates. Disulfides 22-31 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 6-11 21059946-2 2010 A class of such proteins with alpha-helical hairpin structure bridged by two intramolecular disulfides is trapped by a Mia40-dependent oxidative process. Disulfides 92-102 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 119-124 20367259-4 2010 IMS import of SOD1 involves its copper chaperone, CCS, whose mitochondrial distribution is regulated by the Mia40/Erv1 disulfide relay system in a redox-dependent manner: CCS promotes SOD1 maturation and retention in the IMS. Disulfides 119-128 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 108-113 20136511-4 2010 Tim40/Mia40 transfers disulfide bonds to newly imported IMS proteins by dithiol/disulfide exchange reactions involving mixed disulfide intermediates. dithiol 72-79 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 6-11 20136511-4 2010 Tim40/Mia40 transfers disulfide bonds to newly imported IMS proteins by dithiol/disulfide exchange reactions involving mixed disulfide intermediates. Disulfides 80-89 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 6-11 20136511-4 2010 Tim40/Mia40 transfers disulfide bonds to newly imported IMS proteins by dithiol/disulfide exchange reactions involving mixed disulfide intermediates. Disulfides 80-89 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 6-11 20136511-6 2010 After disulfide transfer from Tim40/Mia40 to substrate proteins, Tim40/Mia40 is reoxidized again by Erv1, which is then oxidized by electron transfer to either cytochrome c or molecular oxygen. Disulfides 6-15 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 36-41 20136511-6 2010 After disulfide transfer from Tim40/Mia40 to substrate proteins, Tim40/Mia40 is reoxidized again by Erv1, which is then oxidized by electron transfer to either cytochrome c or molecular oxygen. Disulfides 6-15 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 71-76 20136511-6 2010 After disulfide transfer from Tim40/Mia40 to substrate proteins, Tim40/Mia40 is reoxidized again by Erv1, which is then oxidized by electron transfer to either cytochrome c or molecular oxygen. Oxygen 186-192 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 36-41 20136511-6 2010 After disulfide transfer from Tim40/Mia40 to substrate proteins, Tim40/Mia40 is reoxidized again by Erv1, which is then oxidized by electron transfer to either cytochrome c or molecular oxygen. Oxygen 186-192 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 71-76 20367259-4 2010 IMS import of SOD1 involves its copper chaperone, CCS, whose mitochondrial distribution is regulated by the Mia40/Erv1 disulfide relay system in a redox-dependent manner: CCS promotes SOD1 maturation and retention in the IMS. Copper 32-38 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 108-113 20026652-0 2009 A novel intermembrane space-targeting signal docks cysteines onto Mia40 during mitochondrial oxidative folding. Cysteine 51-60 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 66-71 20214493-5 2010 Proteins destined to the intermembrane space are trapped by a disulfide relay mechanism that involves an electron cascade from the incoming substrate to Mia40, then on to Erv1, and finally to molecular oxygen via cytochrome c. Disulfides 62-71 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 153-158 20026652-1 2009 Mia40 imports Cys-containing proteins into the mitochondrial intermembrane space (IMS) by ensuring their Cys-dependent oxidative folding. Cysteine 14-17 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 20026652-1 2009 Mia40 imports Cys-containing proteins into the mitochondrial intermembrane space (IMS) by ensuring their Cys-dependent oxidative folding. Cysteine 105-108 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 20026652-2 2009 In this study, we show that the specific Cys of the substrate involved in docking with Mia40 is substrate dependent, the process being guided by an IMS-targeting signal (ITS) present in Mia40 substrates. Cysteine 41-44 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 87-92 20026652-2 2009 In this study, we show that the specific Cys of the substrate involved in docking with Mia40 is substrate dependent, the process being guided by an IMS-targeting signal (ITS) present in Mia40 substrates. Cysteine 41-44 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 186-191 20026652-4 2009 We rationalize the dual function of Mia40 as a receptor and an oxidase in a two step-specific mechanism: an ITS-guided sliding step orients the substrate noncovalently, followed by docking of the substrate Cys now juxtaposed to pair with the Mia40 active Cys. Cysteine 206-209 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 36-41 20026652-4 2009 We rationalize the dual function of Mia40 as a receptor and an oxidase in a two step-specific mechanism: an ITS-guided sliding step orients the substrate noncovalently, followed by docking of the substrate Cys now juxtaposed to pair with the Mia40 active Cys. Cysteine 206-209 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 242-247 20026652-4 2009 We rationalize the dual function of Mia40 as a receptor and an oxidase in a two step-specific mechanism: an ITS-guided sliding step orients the substrate noncovalently, followed by docking of the substrate Cys now juxtaposed to pair with the Mia40 active Cys. Cysteine 255-258 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 36-41 19679655-8 2009 To understand the functional role of each disulfide, small molecules and the physiological substrate protein Mia40 were used as electron donors in oxygen consumption assays. Disulfides 42-51 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 109-114 19720617-4 2009 For their import into the IMS, they employ a disulphide relay system, made up of two essential proteins, Mia40/Tim40 and the flavin-dependent sulfhydryl-electron transferase Erv1. disulphide 45-55 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 105-110 19679655-8 2009 To understand the functional role of each disulfide, small molecules and the physiological substrate protein Mia40 were used as electron donors in oxygen consumption assays. Oxygen 147-153 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 109-114 18761382-5 2009 Substrates are imported via a disulfide exchange relay with two components Mia40 and Erv1. Disulfides 30-39 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 75-80 19477928-1 2009 Mia40 and Erv1 execute a disulfide relay to import the small Tim proteins into the mitochondrial intermembrane space. Disulfides 25-34 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 19182799-3 2009 MIA40 has a 66-residue folded domain made of an alpha-helical hairpin core stabilized by two structural disulfides and a rigid N-terminal lid, with a characteristic CPC motif that can donate its disulfide bond to substrates. Disulfides 104-114 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 19182799-3 2009 MIA40 has a 66-residue folded domain made of an alpha-helical hairpin core stabilized by two structural disulfides and a rigid N-terminal lid, with a characteristic CPC motif that can donate its disulfide bond to substrates. Disulfides 104-113 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 19397338-8 2009 An N-terminal His-tagged version of human Mia40, a resident oxidoreductase of the IMS and a putative physiological reductant of lfALR, was subcloned and expressed in Escherichia coli BL21 DE3 cells. Histidine 14-17 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 42-47 19397338-9 2009 Mia40, as isolated, shows a visible spectrum characteristic of an Fe-S center and contains 0.56 +/- 0.02 atom of iron per subunit. Iron 66-70 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 19397338-9 2009 Mia40, as isolated, shows a visible spectrum characteristic of an Fe-S center and contains 0.56 +/- 0.02 atom of iron per subunit. Iron 113-117 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 19397338-10 2009 Treatment of Mia40 with guanidine hydrochloride and triscarboxyethylphosphine hydrochloride during purification removed this chromophore. Guanidine 24-47 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 13-18 19397338-10 2009 Treatment of Mia40 with guanidine hydrochloride and triscarboxyethylphosphine hydrochloride during purification removed this chromophore. triscarboxyethylphosphine hydrochloride 52-91 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 13-18 19397338-13 2009 Thus, catalysis involves a flow of reducing equivalents from the reduced CxC motif of Mia40 to distal and then proximal CxxC motifs of lfALR to the flavin ring and, finally, to cytochrome c or molecular oxygen. 4,6-dinitro-o-cresol 148-154 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 86-91 19397338-13 2009 Thus, catalysis involves a flow of reducing equivalents from the reduced CxC motif of Mia40 to distal and then proximal CxxC motifs of lfALR to the flavin ring and, finally, to cytochrome c or molecular oxygen. Oxygen 203-209 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 86-91 18179776-3 2008 Recently, a disulfide relay system in the IMS has been identified which consists of two essential components, the sulfhydryl oxidase Erv1 and the redox-regulated import receptor Mia40/Tim40. Disulfides 12-21 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 178-183 18852299-6 2008 The ternary complex represents a transient and intermediate step in the oxidation of intermembrane space precursors, where the oxidase Erv1 promotes disulfide transfer to the precursor while both oxidase and precursor are associated with the disulfide carrier Mia40. Disulfides 242-251 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 260-265 19076451-4 2008 Mia40 is a protein in the intermembrane space that directly binds newly imported proteins via disulfide bonds. Disulfides 94-103 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 19076451-5 2008 By reorganization of these bonds, intramolecular disulfide bonds are formed in the imported proteins, which are thereby released from Mia40 into the intermembrane space. Disulfides 49-58 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 134-139 19076451-8 2008 Oxidation of Mia40 is carried out by Erv1, a conserved flavine adenine dinucleotide (FAD)-binding sulfhydryl oxidase. Flavin-Adenine Dinucleotide 55-83 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 13-18 19076451-8 2008 Oxidation of Mia40 is carried out by Erv1, a conserved flavine adenine dinucleotide (FAD)-binding sulfhydryl oxidase. Flavin-Adenine Dinucleotide 85-88 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 13-18 19076451-9 2008 Erv1 directly interacts with Mia40 and shuttles electrons from reduced Mia40 to oxidized cytochrome c, from whence they flow through cytochrome oxidase to molecular oxygen. Oxygen 165-171 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 29-34 18787558-2 2008 This system consists of two essential proteins, Mia40 and Erv1, which bind to newly imported proteins by disulphide transfer. disulphide 105-115 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 48-53 18179776-5 2008 In order to enable Mia40 to perform the oxidation of substrate proteins, the sulfhydryl oxidase Erv1 mediates the oxidation of Mia40 in a disulfide transfer reaction. Disulfides 138-147 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 19-24 18179776-5 2008 In order to enable Mia40 to perform the oxidation of substrate proteins, the sulfhydryl oxidase Erv1 mediates the oxidation of Mia40 in a disulfide transfer reaction. Disulfides 138-147 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 127-132 17680986-5 2007 Here we show that interaction with Mia40 is a site-specific event: (i) the N-terminal first cysteine of the precursor is crucial for docking onto Mia40 via a mixed disulphide; (ii) release is triggered by disulphide pairing of the C-terminal cysteine onto the N-terminal one; and (iii) formation of the inner disulphide between the second and third cysteines apparently precedes the release reaction and is critical for assembly with Tim9. Cysteine 92-100 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 35-40 17978092-4 2008 Import of the precursors requires the essential intermembrane space proteins Mia40 and Erv1 that were proposed to form a relay for disulfide formation in the precursor proteins. Disulfides 131-140 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 77-82 17959605-0 2007 Functional characterization of Mia40p, the central component of the disulfide relay system of the mitochondrial intermembrane space. Disulfides 68-77 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 31-37 17959605-1 2007 Mia40p and Erv1p are components of a translocation pathway for the import of cysteine-rich proteins into the intermembrane space of mitochondria. Cysteine 77-85 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-6 17959605-2 2007 We have characterized the redox behavior of Mia40p and reconstituted the disulfide transfer system of Mia40p by using recombinant functional C-terminal fragment of Mia40p, Mia40C, and Erv1p. Disulfides 73-82 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 102-108 17959605-2 2007 We have characterized the redox behavior of Mia40p and reconstituted the disulfide transfer system of Mia40p by using recombinant functional C-terminal fragment of Mia40p, Mia40C, and Erv1p. Disulfides 73-82 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 102-108 17959605-3 2007 Oxidized Mia40p contains three intramolecular disulfide bonds. Disulfides 46-55 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 9-15 17680986-5 2007 Here we show that interaction with Mia40 is a site-specific event: (i) the N-terminal first cysteine of the precursor is crucial for docking onto Mia40 via a mixed disulphide; (ii) release is triggered by disulphide pairing of the C-terminal cysteine onto the N-terminal one; and (iii) formation of the inner disulphide between the second and third cysteines apparently precedes the release reaction and is critical for assembly with Tim9. Cysteine 92-100 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 146-151 17680986-5 2007 Here we show that interaction with Mia40 is a site-specific event: (i) the N-terminal first cysteine of the precursor is crucial for docking onto Mia40 via a mixed disulphide; (ii) release is triggered by disulphide pairing of the C-terminal cysteine onto the N-terminal one; and (iii) formation of the inner disulphide between the second and third cysteines apparently precedes the release reaction and is critical for assembly with Tim9. disulphide 164-174 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 35-40 17967948-3 2007 Both factors form a disulfide relay system in which Mia40 functions as a receptor that transiently interacts with incoming polypeptides via disulfide bonds. Disulfides 20-29 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 52-57 17967948-3 2007 Both factors form a disulfide relay system in which Mia40 functions as a receptor that transiently interacts with incoming polypeptides via disulfide bonds. Disulfides 140-149 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 52-57 17680986-5 2007 Here we show that interaction with Mia40 is a site-specific event: (i) the N-terminal first cysteine of the precursor is crucial for docking onto Mia40 via a mixed disulphide; (ii) release is triggered by disulphide pairing of the C-terminal cysteine onto the N-terminal one; and (iii) formation of the inner disulphide between the second and third cysteines apparently precedes the release reaction and is critical for assembly with Tim9. disulphide 164-174 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 146-151 15989945-1 2005 In this issue of Cell, show that there is a disulfide relay system in the intermembrane space (IMS) of mitochondria that is comprised of the proteins Mia40 and Erv1. Disulfides 44-53 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 150-155 17680986-5 2007 Here we show that interaction with Mia40 is a site-specific event: (i) the N-terminal first cysteine of the precursor is crucial for docking onto Mia40 via a mixed disulphide; (ii) release is triggered by disulphide pairing of the C-terminal cysteine onto the N-terminal one; and (iii) formation of the inner disulphide between the second and third cysteines apparently precedes the release reaction and is critical for assembly with Tim9. disulphide 205-215 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 35-40 17680986-5 2007 Here we show that interaction with Mia40 is a site-specific event: (i) the N-terminal first cysteine of the precursor is crucial for docking onto Mia40 via a mixed disulphide; (ii) release is triggered by disulphide pairing of the C-terminal cysteine onto the N-terminal one; and (iii) formation of the inner disulphide between the second and third cysteines apparently precedes the release reaction and is critical for assembly with Tim9. Cysteine 242-250 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 35-40 17680986-5 2007 Here we show that interaction with Mia40 is a site-specific event: (i) the N-terminal first cysteine of the precursor is crucial for docking onto Mia40 via a mixed disulphide; (ii) release is triggered by disulphide pairing of the C-terminal cysteine onto the N-terminal one; and (iii) formation of the inner disulphide between the second and third cysteines apparently precedes the release reaction and is critical for assembly with Tim9. disulphide 205-215 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 35-40 17680986-5 2007 Here we show that interaction with Mia40 is a site-specific event: (i) the N-terminal first cysteine of the precursor is crucial for docking onto Mia40 via a mixed disulphide; (ii) release is triggered by disulphide pairing of the C-terminal cysteine onto the N-terminal one; and (iii) formation of the inner disulphide between the second and third cysteines apparently precedes the release reaction and is critical for assembly with Tim9. Cysteine 349-358 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 35-40 16185709-6 2005 Depletion of MIA40 in human cells by RNA interference specifically affected steady-state levels of small and cysteine-containing intermembrane space proteins like DDP1 and TIM10A, suggesting that MIA40 acts along the import pathway into the intermembrane space. Cysteine 109-117 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 13-18 16185709-6 2005 Depletion of MIA40 in human cells by RNA interference specifically affected steady-state levels of small and cysteine-containing intermembrane space proteins like DDP1 and TIM10A, suggesting that MIA40 acts along the import pathway into the intermembrane space. Cysteine 109-117 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 196-201 16185709-7 2005 Studies on the in vivo redox state of human MIA40 demonstrated that it contains intramolecular disulfide bonds. Disulfides 95-104 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 44-49 16185709-8 2005 Thiol-trapping assays revealed the co-existence of different oxidation states of human MIA40 within the cell. Sulfhydryl Compounds 0-5 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 87-92 16185709-11 2005 Taken together, we conclude that the biogenesis and function of MIA40 in the mitochondrial intermembrane space is dependent on redox processes involving conserved cysteine residues. Cysteine 163-171 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 64-69 17553782-0 2007 Biogenesis of the essential Tim9-Tim10 chaperone complex of mitochondria: site-specific recognition of cysteine residues by the intermembrane space receptor Mia40. Cysteine 103-111 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 157-162 17553782-6 2007 Mia40 selectively recognizes cysteine-containing IMS proteins in a site-specific manner in organello and in vitro. Cysteine 29-37 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 17336303-1 2007 The thiol oxidase Erv1 and the redox-regulated receptor Mia40/Tim40 are components of a disulfide relay system which mediates import of proteins into the intermembrane space (IMS) of mitochondria. Disulfides 88-97 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 56-61 17336303-3 2007 After passage across the translocase of the mitochondrial outer membrane Erv1 interacts via disulfide bonds with Mia40. Disulfides 92-101 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 113-118 16771672-5 2006 A redox pathway (Mia40p and Erv1p) mediates the import of intermembrane space proteins such as the small Tim proteins, Cox17p, and Cox19p, which have disulfide bonds. Disulfides 150-159 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 17-23 15989955-3 2005 After passage through the TOM channel, these proteins are covalently trapped by Mia40 via disulfide bridges. Disulfides 90-99 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 80-85 15989955-4 2005 Mia40 contains cysteine residues, which are oxidized by the sulfhydryl oxidase Erv1. Cysteine 15-23 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 15989955-6 2005 We propose that Erv1 and Mia40 function as a disulfide relay system that catalyzes the import of proteins into the IMS by an oxidative folding mechanism. Disulfides 45-54 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 25-30 15989945-3 2005 Oxidized Mia40 traps newly imported proteins through mixed disulfide bridges. Disulfides 59-68 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 9-14 15989945-5 2005 The reduced Mia40 generated is then reoxidized by the sulfhydryl oxidase Erv1, promoting the next round of disulfide exchange. Disulfides 107-116 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 12-17 33818502-0 2021 Exploring the contribution of the mitochondrial disulfide relay system to Parkinson"s disease: the PINK1/CHCHD4 interplay. Disulfides 48-57 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 105-111 15620710-0 2005 Mia40, a novel factor for protein import into the intermembrane space of mitochondria is able to bind metal ions. Metals 102-107 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 0-5 15620710-3 2005 We have identified an essential component, Mia40/Tim40/Ykl195w, with a highly conserved domain in the IMS that is able to bind zinc and copper ions. Copper 136-142 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 43-48 15620710-4 2005 In cells lacking Mia40, the endogenous levels of Tim13 and other metal-binding IMS proteins are strongly reduced due to the impaired import of these proteins. Metals 65-70 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 17-22 15620710-6 2005 We conclude that Mia40 is the first essential component of a specific translocation pathway of metal-binding IMS proteins. Metals 95-100 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 17-22 34557489-5 2021 The intermembrane space (IMS) contains a high number of cysteine-rich proteins, which are mostly imported via the MIA40 oxidative folding system, dependent on the reduction, and oxidation of key Cys residues. Cysteine 56-64 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 114-119 34557489-5 2021 The intermembrane space (IMS) contains a high number of cysteine-rich proteins, which are mostly imported via the MIA40 oxidative folding system, dependent on the reduction, and oxidation of key Cys residues. Cysteine 195-198 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 114-119 35204825-9 2022 Redox sensitivity of p53 functions is supported by (i) thioredoxin-dependent reduction of p53 disulfides, (ii) inhibition of the thioredoxin-dependent deoxyribonucleotide synthesis by p53 binding to RRM2B and (iii) changed intracellular distribution of p53 through its oxidation by CHCHD4 in the mitochondrial intermembrane space. Deoxyribonucleotides 151-170 coiled-coil-helix-coiled-coil-helix domain containing 4 Homo sapiens 282-288