PMID-sentid Pub_year Sent_text compound_name comp_offset prot_official_name organism prot_offset 10704220-2 2000 60 degrees and translate through an appreciable distance between two binding sites, proximal to cytochrome c(1) and to the lumen-side quinol binding site. Hydroquinones 134-140 cytochrome c1 Homo sapiens 96-111 10704220-7 2000 This suggests that upon initiation of electron transfer by a light flash, cytochrome b(6) reduction requires movement of reduced ISP from an initial position predominantly proximal to cytochrome f, apparently favored by the reduced ISP, to the quinol binding site at which the oxidant-induced reduction of cytochrome b(6) is initiated. Hydroquinones 244-250 mitochondrially encoded cytochrome b Homo sapiens 74-86 10704220-7 2000 This suggests that upon initiation of electron transfer by a light flash, cytochrome b(6) reduction requires movement of reduced ISP from an initial position predominantly proximal to cytochrome f, apparently favored by the reduced ISP, to the quinol binding site at which the oxidant-induced reduction of cytochrome b(6) is initiated. Hydroquinones 244-250 mitochondrially encoded cytochrome b Homo sapiens 306-318 10640505-1 2000 We have already reported that the quinol formation from some para-alkylphenols, which is a novel metabolic pathway catalyzed by cytochrome P-450, occurs in a rat liver microsomal system (). Hydroquinones 34-40 cytochrome P450 family 4 subfamily F member 3 Homo sapiens 128-144 10640505-2 2000 In the present study, we investigated whether estrone and 17beta-estadiol, each of which contains a p-alkylphenol moiety, are also oxidized into the corresponding quinols by cytochrome P-450. Hydroquinones 163-170 cytochrome P450 family 4 subfamily F member 3 Homo sapiens 174-190 10640505-4 2000 The results show that estrone and 17beta-estadiol were converted into the corresponding quinols by CYP1A1, CYP2B6, and CYP2E1. Hydroquinones 88-95 cytochrome P450 family 1 subfamily A member 1 Homo sapiens 99-105 10640505-4 2000 The results show that estrone and 17beta-estadiol were converted into the corresponding quinols by CYP1A1, CYP2B6, and CYP2E1. Hydroquinones 88-95 cytochrome P450 family 2 subfamily B member 6 Homo sapiens 107-113 10640505-4 2000 The results show that estrone and 17beta-estadiol were converted into the corresponding quinols by CYP1A1, CYP2B6, and CYP2E1. Hydroquinones 88-95 cytochrome P450 family 2 subfamily E member 1 Homo sapiens 119-125 10651825-3 2000 Modular kinetic analysis around coenzyme Q revealed that stimulation of the rate was due to stimulation of quinol oxidation via the cytochrome pathway (cytochrome bc1, cytochrome c and cytochrome c oxidase). Hydroquinones 107-113 cytochrome c Solanum tuberosum 168-180 10651825-3 2000 Modular kinetic analysis around coenzyme Q revealed that stimulation of the rate was due to stimulation of quinol oxidation via the cytochrome pathway (cytochrome bc1, cytochrome c and cytochrome c oxidase). Hydroquinones 107-113 cytochrome c Solanum tuberosum 185-197 9062116-0 1997 Function-directed mutagenesis of the cytochrome b6f complex in Chlamydomonas reinhardtii: involvement of the cd loop of cytochrome b6 in quinol binding to the Q(o) site. Hydroquinones 137-143 cytochrome b Chlamydomonas reinhardtii 37-49 10512801-1 1999 Crystallographic structures of the mitochondrial ubiquinol/cytochrome c oxidoreductase (cytochrome bc(1) complex) suggest that the mechanism of quinol oxidation by the bc(1) complex involves a substantial movement of the soluble head of the Rieske iron-sulfur protein (ISP) between reaction domains in cytochrome b and cytochrome c(1) subunits. Hydroquinones 52-58 mitochondrially encoded cytochrome b Homo sapiens 88-100 10512801-1 1999 Crystallographic structures of the mitochondrial ubiquinol/cytochrome c oxidoreductase (cytochrome bc(1) complex) suggest that the mechanism of quinol oxidation by the bc(1) complex involves a substantial movement of the soluble head of the Rieske iron-sulfur protein (ISP) between reaction domains in cytochrome b and cytochrome c(1) subunits. Hydroquinones 52-58 cytochrome c1 Homo sapiens 319-334 10397748-1 1999 NAD(P)H:quinone oxidoreductase (NQO1) converts benzene-derived quinones to less toxic hydroquinones and has been implicated in benzene-associated hematotoxicity. Hydroquinones 86-99 crystallin zeta Homo sapiens 8-30 10397748-1 1999 NAD(P)H:quinone oxidoreductase (NQO1) converts benzene-derived quinones to less toxic hydroquinones and has been implicated in benzene-associated hematotoxicity. Hydroquinones 86-99 NAD(P)H quinone dehydrogenase 1 Homo sapiens 32-36 9703276-3 1998 In this report, the mutagenicity and carcinogenicity of hydroquinones of benzo(a)pyrene and benzene was investigated to address two important questions: (1) do hydroquinones contribute to benzo(a)pyrene and benzene carcinogenicity; and (2) how safe is it to increase the levels of NAD(P)H:quinone oxidoreductase 1 (NQO1), a key enzyme in the generation of hydroquinone. Hydroquinones 56-69 NAD(P)H dehydrogenase [quinone] 1 Cricetulus griseus 281-313 9703276-3 1998 In this report, the mutagenicity and carcinogenicity of hydroquinones of benzo(a)pyrene and benzene was investigated to address two important questions: (1) do hydroquinones contribute to benzo(a)pyrene and benzene carcinogenicity; and (2) how safe is it to increase the levels of NAD(P)H:quinone oxidoreductase 1 (NQO1), a key enzyme in the generation of hydroquinone. Hydroquinones 56-69 NAD(P)H dehydrogenase [quinone] 1 Cricetulus griseus 315-319 10748880-1 1999 AIMS: The two electron reduction of quinones to hydroquinones by NAD(P)H quinone oxidoreductase (NQO1) plays an important role in both activation and detoxification of quinone and similarly reactive compounds. Hydroquinones 48-61 NAD(P)H quinone dehydrogenase 1 Homo sapiens 97-101 9394028-9 1997 A strong correlation was found between the immunoquantified concentrations of CYP3A and the rates of formation of the sulfoxide and quinol metabolites of tazofelone. Hydroquinones 132-138 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 78-83 10932727-7 1997 The main difference between quinol- and the aa3-type cytochrome c-oxidases is the CuA center, which is absent in the quinol oxidases. Hydroquinones 28-34 cytochrome c, somatic Homo sapiens 53-65 10932727-7 1997 The main difference between quinol- and the aa3-type cytochrome c-oxidases is the CuA center, which is absent in the quinol oxidases. Hydroquinones 117-123 cytochrome c, somatic Homo sapiens 53-65 27406966-4 1997 Redox cycling of 2,3-dimethyl-, 2,3-dimethoxy- and 2-methoxy-1,4-naphthoquinone, and the autoxidation of their respective hydroquinones, were similarly inhibited by diaphorase. Hydroquinones 122-135 dihydrolipoamide dehydrogenase Homo sapiens 165-175 8573194-5 1996 SOD also inhibited the rate of quinol oxidation by oxygen, after quinone reduction by a stoichiometric amount of DHLA. Hydroquinones 31-37 superoxide dismutase 1 Homo sapiens 0-3 12226388-11 1996 As in the case with DT-diaphorase in animals, the main NAD(P)H-QR function in plant cells may be the reduction of quinones to quinols, which prevents the production of semiquinones and oxygen radicals. Hydroquinones 126-133 NAD(P)H quinone dehydrogenase 1 Homo sapiens 20-33 7786300-5 1995 It was found that rat and human UGT1.6 and human UGT1.7 catalyse monoglucuronide formation of planar PAH quinols. Hydroquinones 105-112 UDP glucuronosyltransferase family 1 member A6 Homo sapiens 32-38 7639539-1 1995 NAD(P)H: quinone-acceptor oxidoreductase (EC 1.6.99.2), also referred to as DT-diaphorase, is a flavoprotein that catalyzes the two-electron reduction of quinones and quinonoid compounds to hydroquinones, using either NADH or NADPH as the electron donor. Hydroquinones 190-203 NAD(P)H quinone dehydrogenase 1 Homo sapiens 76-89 8558523-7 1996 From comparing the structural requirements for crosslinking and the cytotoxicities, a mechanism has been proposed wherein some hydroquinones can associate and react at TGC sequences in DNA. Hydroquinones 127-140 transglutaminase 2 Homo sapiens 168-171 7673215-11 1995 The respiratory activities and the amounts of reduced cytochrome b measured during steady state suggest that the W142S mutation also modified the quinol-cytochrome c1 electron transfer pathway. Hydroquinones 146-152 cytochrome b Saccharomyces cerevisiae S288C 54-66 7673215-13 1995 Of the four amino acids tested at position 142, only arginine resulted in a decrease in cytochrome b reduction through center N. These findings are discussed in terms of the structure and function of the quinol oxidation site and seem to indicate that Trp-142 is not critical to the kinetic interaction of ubiquinol with the reductase, but plays an important role in the electron transfer reactions that intervene between ubiquinol oxidation and cytochrome c1 reduction. Hydroquinones 204-210 cytochrome b Saccharomyces cerevisiae S288C 88-100 7786300-5 1995 It was found that rat and human UGT1.6 and human UGT1.7 catalyse monoglucuronide formation of planar PAH quinols. Hydroquinones 105-112 UDP glucuronosyltransferase family 1 member A7 Homo sapiens 49-55 7786300-9 1995 The results suggest that planar PAH phenols and quinols are conjugated more efficiently by human UGT1.7 than by UGT1.6, which preferentially conjugates simple planar phenols. Hydroquinones 48-55 UDP glucuronosyltransferase family 1 member A7 Homo sapiens 97-103 7786300-9 1995 The results suggest that planar PAH phenols and quinols are conjugated more efficiently by human UGT1.7 than by UGT1.6, which preferentially conjugates simple planar phenols. Hydroquinones 48-55 UDP glucuronosyltransferase family 1 member A6 Homo sapiens 112-118 7832587-2 1994 The substrate specificity (quinol vs. cytochrome c) is reflected in the presence of a unique copper centre (CuA) in cytochrome c oxidases. Hydroquinones 27-33 cytochrome c, somatic Homo sapiens 116-128 7531691-1 1995 NAD(P)H:quinone oxidoreductase (EC 1.6.99.2) (DT-diaphorase) is an FAD-containing enzyme that catalyzes the 2-electron reduction of quinones to hydroquinones using either NADH or NADPH as the electron donor. Hydroquinones 144-157 NAD(P)H quinone dehydrogenase 1 Homo sapiens 46-59 7531691-11 1995 The enzyme reconstituted with oxidized 5-deaza-FAD has significant catalytic activity, confirming that DT-diaphorase is an obligatory 2-electron transfer enzyme and plays a role in the detoxification of quinones and quinoid compounds by reducing them to the relatively stable hydroquinones. Hydroquinones 276-289 NAD(P)H quinone dehydrogenase 1 Homo sapiens 103-116 7989327-7 1994 This conclusion is confirmed by the results, which indicate that pi-ADH very efficiently catalyzes the reduction of BQI and 1,4-benzoquinone (BQ) to the corresponding hydroquinones. Hydroquinones 167-180 alcohol dehydrogenase 1A (class I), alpha polypeptide Homo sapiens 68-71 24311289-8 1994 With added quinol, reduction of cytochrome b-563 occurred. Hydroquinones 11-17 mitochondrially encoded cytochrome b Homo sapiens 32-44 2846049-5 1988 The extreme specificity of myxothiazol binding at or near the quinol oxidase domain of mitochondrial cytochrome b, i.e., b-566, suggests a defect in this region of complex III which may perturb the kinetics or thermodynamics of quinol oxidation in the complex. Hydroquinones 62-68 mitochondrially encoded cytochrome b Homo sapiens 101-113 8461317-1 1993 NAD(P)H:quinone reductase, or DT-diaphorase, has been studied primarily in the liver where it appears to function as an antioxidant-like enzyme in the 2-electron reduction of some quinones to less toxic hydroquinones. Hydroquinones 203-216 NAD(P)H quinone dehydrogenase 1 Rattus norvegicus 30-43 1764253-2 1991 This semiquinone redox cycling is prevented by the NAD(P)H:quinone reductase (NQR; EC 1.6.99.2) because it mediates a 2-electron reduction which results in the formation of hydroquinones instead of semiquinones. Hydroquinones 173-186 crystallin zeta Homo sapiens 51-76 1764253-2 1991 This semiquinone redox cycling is prevented by the NAD(P)H:quinone reductase (NQR; EC 1.6.99.2) because it mediates a 2-electron reduction which results in the formation of hydroquinones instead of semiquinones. Hydroquinones 173-186 crystallin zeta Homo sapiens 78-81 2176839-7 1990 (4) In pre-steady-state assays of cytochrome b reduction by quinol, the mutant shows a reduced extent of reduction. Hydroquinones 60-66 cytochrome b, mitochondrial Mus musculus 34-46 1973524-1 1990 Several lines of evidence suggest that the renal-specific toxicity of quinol-linked GSH conjugates is probably a result of their metabolism by gamma-glutamyl transpeptidase and selective accumulation by proximal tubular cells. Hydroquinones 70-76 inactive glutathione hydrolase 2 Homo sapiens 143-172 1971126-5 1990 The ability of gamma-GT to facilitate quinol oxidation by catalyzing the formation of the labile cysteine conjugate may have important biological consequences. Hydroquinones 38-44 inactive glutathione hydrolase 2 Homo sapiens 15-23 2162450-11 1990 The activity of cytochrome P-450 reductase, which reduces quinones to hydroquinones in the estrogen redox cycle, was 6-fold higher in liver than in kidney of both control and estrogen-treated animals. Hydroquinones 70-83 cytochrome P450 2A3-like Mesocricetus auratus 16-32 2307529-1 1990 NAD(P)H:(quinone-acceptor)oxidoreductase (QAO), previously known as DT-diaphorase, catalyzes the reduction of quinones to hydroquinones. Hydroquinones 122-135 NAD(P)H quinone dehydrogenase 1 Homo sapiens 68-81 33768254-4 2021 Two states are resolved in A. thaliana complex I, with different angles between the two arms and different conformations of the ND1 (NADH dehydrogenase subunit 1) loop near the quinol binding site. Hydroquinones 177-183 NADH dehydrogenase subunit 1 Arabidopsis thaliana 128-131 33768254-4 2021 Two states are resolved in A. thaliana complex I, with different angles between the two arms and different conformations of the ND1 (NADH dehydrogenase subunit 1) loop near the quinol binding site. Hydroquinones 177-183 NADH dehydrogenase subunit 1 Arabidopsis thaliana 133-161 34356648-2 2021 Based on the findings of clinical trials, it is safe to conclude that genetic predisposition and environmental factors are the main factors responsible for the formation of colorectal cancer.The NQO1 gene plays an important role in reducing endogenous and exogenous quinones as well as quinone compounds to hydroquinones. Hydroquinones 307-320 NAD(P)H quinone dehydrogenase 1 Homo sapiens 195-199 34276623-6 2021 These multiheme c-Cyts may form the pathways similar to those found in bacteria for transferring electrons from the quinone/quinol pool in the cytoplasmic membrane to the Fe(III) (oxyhydr)oxides external to the archaeal cells. Hydroquinones 124-130 general transcription factor IIE subunit 1 Homo sapiens 171-178 8329437-7 1993 The comparison of inhibition titrations in combination with the analysis of the primary structures has enabled us to identify amino acid residues in cytochrome b that may be involved in the binding of the inhibitors and, by extrapolation, quinone/quinol. Hydroquinones 247-253 mitochondrially encoded cytochrome b Homo sapiens 149-161 1510689-1 1992 Two new methods have been devised for measuring fumarate reduction by beef heart succinate-ubiquinone oxidoreductase with quinols as electron donors. Hydroquinones 122-129 thioredoxin reductase 1 Homo sapiens 102-116 1914494-1 1991 UDP-glucuronosyltransferases (UGT) play a major role in the elimination of nucleophilic metabolites of carcinogens, such as phenols and quinols of polycyclic aromatic hydrocarbons. Hydroquinones 136-143 beta-1,3-glucuronyltransferase 2 Homo sapiens 0-28 1914494-1 1991 UDP-glucuronosyltransferases (UGT) play a major role in the elimination of nucleophilic metabolites of carcinogens, such as phenols and quinols of polycyclic aromatic hydrocarbons. Hydroquinones 136-143 beta-1,3-glucuronyltransferase 2 Homo sapiens 30-33 2244516-0 1990 Effect of superoxide dismutase on the autoxidation of hydroquinones formed during DT-diaphorase catalysis and glutathione nucleophilic addition. Hydroquinones 54-67 NAD(P)H quinone dehydrogenase 1 Homo sapiens 82-95 2538447-10 1989 These results suggest that the quinol oxidizing sites in the cytochrome b6-f complex may differ from those in the mitochondrial cytochrome b-c1 complex. Hydroquinones 31-37 mitochondrially encoded cytochrome b Homo sapiens 61-73 3129984-1 1988 DT diaphorase catalyzes the transfer of two electrons to quinones to form relatively stable hydroquinones, thus protecting cells from damage by semiquinone production and subsequent superoxide radical formation. Hydroquinones 92-105 NAD(P)H quinone dehydrogenase 1 Rattus norvegicus 0-13 2455523-6 1988 The results support the hypothesis that DT-diaphorase competes with one-electron quinone-reducing enzymes (such as cytochrome P-450 reductase) which generate auto-oxidizable semiquinones and forms more stable hydroquinones as an initial step in the detoxification of quinones in 10T1/2 cells. Hydroquinones 209-222 NAD(P)H dehydrogenase, quinone 1 Mus musculus 40-53 3934671-4 1985 Structurally dissimilar catechols (1,2-diphenols) and hydroquinones (1,4-diphenols) induce quinone reductase in these systems, but resorcinol (1,3-diphenol) and its substituted analogues are inactive. Hydroquinones 54-67 crystallin, zeta Mus musculus 91-108 2830916-3 1987 Cytochrome P-450 and NADPH-cytochrome P-450 reductase are capable of DCNQ reduction to semi- and hydroquinones. Hydroquinones 97-110 cytochrome P450 family 4 subfamily F member 3 Homo sapiens 0-16 2830916-3 1987 Cytochrome P-450 and NADPH-cytochrome P-450 reductase are capable of DCNQ reduction to semi- and hydroquinones. Hydroquinones 97-110 cytochrome p450 oxidoreductase Homo sapiens 21-53 24442953-3 1985 Three mechanisms of quinol oxidation are possible: (1) The removal of an electron from the quinol, QH inf2 (sup t) , directly to produce the radical cation, QH 2 ( +) . Hydroquinones 20-26 inverted formin 2 Homo sapiens 102-106 24442953-3 1985 Three mechanisms of quinol oxidation are possible: (1) The removal of an electron from the quinol, QH inf2 (sup t) , directly to produce the radical cation, QH 2 ( +) . Hydroquinones 91-97 inverted formin 2 Homo sapiens 102-106 6319123-3 1983 Measurements of the H+/e- stoichiometry, with three different methods, show that four protons are released from the vesicles per 2e- flowing from quinols to cytochrome c, two of these protons formally deriving from scalar oxidation of quinols by cytochrome c. Hydroquinones 146-153 cytochrome c, somatic Homo sapiens 157-169 6319123-3 1983 Measurements of the H+/e- stoichiometry, with three different methods, show that four protons are released from the vesicles per 2e- flowing from quinols to cytochrome c, two of these protons formally deriving from scalar oxidation of quinols by cytochrome c. Hydroquinones 146-153 cytochrome c, somatic Homo sapiens 246-258 6319123-3 1983 Measurements of the H+/e- stoichiometry, with three different methods, show that four protons are released from the vesicles per 2e- flowing from quinols to cytochrome c, two of these protons formally deriving from scalar oxidation of quinols by cytochrome c. Hydroquinones 235-242 cytochrome c, somatic Homo sapiens 157-169 6284121-2 1982 The kinetics of reduction of cytochrome c by catechol(s), quinol(s) and related compounds were investigated by stopped-flow spectrophotometry. Hydroquinones 58-64 cytochrome c, somatic Homo sapiens 29-41 6313461-7 1983 Finally, cytosolic DT diaphorase, which carries out a two-electron reduction of quinones to more stable hydroquinones, may compete with the one-electron systems and participate in the detoxification of quinones by supplying hydroquinones for conjugation reactions. Hydroquinones 104-117 NAD(P)H quinone dehydrogenase 1 Homo sapiens 19-32 6313461-7 1983 Finally, cytosolic DT diaphorase, which carries out a two-electron reduction of quinones to more stable hydroquinones, may compete with the one-electron systems and participate in the detoxification of quinones by supplying hydroquinones for conjugation reactions. Hydroquinones 224-237 NAD(P)H quinone dehydrogenase 1 Homo sapiens 19-32 6293557-3 1982 At low concentrations of cytochrome c, however, the titrations as a function of quinol concentration appear biphasic both in mitochondria and in submitochondrial particles containing trapped cytochrome c inside the vesicle space, fitting two apparent Km values for ubiquinol-1. Hydroquinones 80-86 LOC104968582 Bos taurus 25-37 6293557-3 1982 At low concentrations of cytochrome c, however, the titrations as a function of quinol concentration appear biphasic both in mitochondria and in submitochondrial particles containing trapped cytochrome c inside the vesicle space, fitting two apparent Km values for ubiquinol-1. Hydroquinones 80-86 LOC104968582 Bos taurus 191-203 32165217-1 2020 The NAD(P)H:quinone oxidoreductase 1 (NQO1) gene encodes a cytosolic flavoenzyme that catalyzes the two-electron reduction of quinones to hydroquinones. Hydroquinones 138-151 NAD(P)H dehydrogenase, quinone 1 Mus musculus 4-36 14285230-0 1965 PHOTOREACTIONS OF CHLOROPLASTS AND CHLOROPHYLL A WITH HYDROQUINONES AND QUINONES: COUPLED PHOTOREDUCTION OF CYTOCHROME C. Hydroquinones 54-67 cytochrome c, somatic Homo sapiens 108-120 34040527-9 2021 Both EPR and LCMS studies confirmed a significant increase in the ROS production in the NQO2 overexpressing cells due to the fast reduction of quinone into quinol that can re-oxidize to form superoxide radicals. Hydroquinones 156-162 N-ribosyldihydronicotinamide:quinone reductase 2 Homo sapiens 88-92 34040527-11 2021 Whereas NQO2 inhibition decreases the amount of superoxide in the first case by decreasing the amount of quinol formed, it increased the toxicity of menadione in the cells co-expressing both enzymes. Hydroquinones 105-111 N-ribosyldihydronicotinamide:quinone reductase 2 Homo sapiens 8-12 39633-4 1979 The data obtained are in favour of the idea that when illuminating the solutions of these pigments in ethanol containing pure p-benzoquinone at pH higher than the definite value, PhP initiation is conditioned by photochemical reaction of pigments with equilibrium amounts of hydroquinones or semiquinone always present in quinone solutions. Hydroquinones 275-288 N-acylsphingosine amidohydrolase 1 Homo sapiens 179-182 33652166-2 2021 DT-diaphorase (DTD), whose level is strongly elevated in various tumors, is a cytosolic flavoenzyme that promotes intracellular reactive oxygen species (ROS) generation via the redox cycling of hydroquinones. Hydroquinones 194-207 NAD(P)H quinone dehydrogenase 1 Homo sapiens 0-13 31900833-2 2020 Past studies found that continuous exposure of human AML U937 cells to HQ selectively produces malignant U937/HQ cells in which FOXP3 upregulation modulates malignant progression. Hydroquinones 71-73 forkhead box P3 Homo sapiens 128-133 31900833-6 2020 Treatment of parental Original Article and HQ-selected malignant U937 cells with compound C induced ROS-mediated p38 MAPK activation, leading to a suppression of AMPKalpha, TET2, and FOXP3 expression. Hydroquinones 43-45 mitogen-activated protein kinase 14 Homo sapiens 113-116 31900833-6 2020 Treatment of parental Original Article and HQ-selected malignant U937 cells with compound C induced ROS-mediated p38 MAPK activation, leading to a suppression of AMPKalpha, TET2, and FOXP3 expression. Hydroquinones 43-45 tet methylcytosine dioxygenase 2 Homo sapiens 173-177 31900833-6 2020 Treatment of parental Original Article and HQ-selected malignant U937 cells with compound C induced ROS-mediated p38 MAPK activation, leading to a suppression of AMPKalpha, TET2, and FOXP3 expression. Hydroquinones 43-45 forkhead box P3 Homo sapiens 183-188 31900833-10 2020 Restoration of AMPKalpha1 or FOXP3 expression increased cell survival after treatment with compound C. In conclusion, our results show that compound C suppresses AMPK/TET2 axis-mediated FOXP3 expression and induces autophagy-dependent apoptosis in parental and HQ-selected malignant U937 cells, suggesting that the AMPK/TET2/FOXP3 axis is a promising target for improving AML therapy and attenuating benzene exposure-induced AML progression. Hydroquinones 261-263 protein kinase AMP-activated catalytic subunit alpha 1 Homo sapiens 15-25 31900833-10 2020 Restoration of AMPKalpha1 or FOXP3 expression increased cell survival after treatment with compound C. In conclusion, our results show that compound C suppresses AMPK/TET2 axis-mediated FOXP3 expression and induces autophagy-dependent apoptosis in parental and HQ-selected malignant U937 cells, suggesting that the AMPK/TET2/FOXP3 axis is a promising target for improving AML therapy and attenuating benzene exposure-induced AML progression. Hydroquinones 261-263 forkhead box P3 Homo sapiens 29-34 31900833-10 2020 Restoration of AMPKalpha1 or FOXP3 expression increased cell survival after treatment with compound C. In conclusion, our results show that compound C suppresses AMPK/TET2 axis-mediated FOXP3 expression and induces autophagy-dependent apoptosis in parental and HQ-selected malignant U937 cells, suggesting that the AMPK/TET2/FOXP3 axis is a promising target for improving AML therapy and attenuating benzene exposure-induced AML progression. Hydroquinones 261-263 protein kinase AMP-activated catalytic subunit alpha 1 Homo sapiens 15-19 31900833-10 2020 Restoration of AMPKalpha1 or FOXP3 expression increased cell survival after treatment with compound C. In conclusion, our results show that compound C suppresses AMPK/TET2 axis-mediated FOXP3 expression and induces autophagy-dependent apoptosis in parental and HQ-selected malignant U937 cells, suggesting that the AMPK/TET2/FOXP3 axis is a promising target for improving AML therapy and attenuating benzene exposure-induced AML progression. Hydroquinones 261-263 tet methylcytosine dioxygenase 2 Homo sapiens 167-171 31900833-10 2020 Restoration of AMPKalpha1 or FOXP3 expression increased cell survival after treatment with compound C. In conclusion, our results show that compound C suppresses AMPK/TET2 axis-mediated FOXP3 expression and induces autophagy-dependent apoptosis in parental and HQ-selected malignant U937 cells, suggesting that the AMPK/TET2/FOXP3 axis is a promising target for improving AML therapy and attenuating benzene exposure-induced AML progression. Hydroquinones 261-263 protein kinase AMP-activated catalytic subunit alpha 1 Homo sapiens 162-166 32165217-1 2020 The NAD(P)H:quinone oxidoreductase 1 (NQO1) gene encodes a cytosolic flavoenzyme that catalyzes the two-electron reduction of quinones to hydroquinones. Hydroquinones 138-151 NAD(P)H dehydrogenase, quinone 1 Mus musculus 38-42 31881324-8 2020 We observed that treatment with fluoxetine or the Nrf2 activator tBHQ (tert-butyl hydroquinone), could reverse depression-like-symptoms and mitigate alterations in autophagy and cell death pathways in the hippocampus by activating Nrf2-dependent gene expressions. Hydroquinones 65-69 nuclear factor, erythroid derived 2, like 2 Mus musculus 50-54 31881324-8 2020 We observed that treatment with fluoxetine or the Nrf2 activator tBHQ (tert-butyl hydroquinone), could reverse depression-like-symptoms and mitigate alterations in autophagy and cell death pathways in the hippocampus by activating Nrf2-dependent gene expressions. Hydroquinones 65-69 nuclear factor, erythroid derived 2, like 2 Mus musculus 231-235 31881324-8 2020 We observed that treatment with fluoxetine or the Nrf2 activator tBHQ (tert-butyl hydroquinone), could reverse depression-like-symptoms and mitigate alterations in autophagy and cell death pathways in the hippocampus by activating Nrf2-dependent gene expressions. Hydroquinones 71-94 nuclear factor, erythroid derived 2, like 2 Mus musculus 50-54 31881324-8 2020 We observed that treatment with fluoxetine or the Nrf2 activator tBHQ (tert-butyl hydroquinone), could reverse depression-like-symptoms and mitigate alterations in autophagy and cell death pathways in the hippocampus by activating Nrf2-dependent gene expressions. Hydroquinones 71-94 nuclear factor, erythroid derived 2, like 2 Mus musculus 231-235 31505859-2 2019 We report on the discovery and characterisation of small organic molecules from Piper genus plants exhibiting XIAP antagonism, namely erioquinol, a quinol substituted in the 4-position with an alkenyl group and the alkenylphenols eriopodols A-C. Another isolated compound was originally identified as gibbilimbol B. Hydroquinones 138-144 X-linked inhibitor of apoptosis Homo sapiens 110-114 31812062-0 2020 Exosomes derived from normal human bronchial epithelial cells down-regulate proliferation and migration of hydroquinone-transformed malignant recipient cells via up-regulating PTEN expression. Hydroquinones 107-119 phosphatase and tensin homolog Homo sapiens 176-180 31812062-3 2020 The goal of this study was to explore whether exosomes derived from normal human bronchial epithelial cells (16HBE) could transmit PTEN to hydroquinone-transformed malignant recipient cells (16HBE-t) and its possible effects on cell proliferation and migration. Hydroquinones 139-151 phosphatase and tensin homolog Homo sapiens 131-135 32039323-1 2020 A novel composite film of hydroquinone/resorcinol-based poly(arylene ether nitrile) (HQ/RS-PEN) improved by bisphenol A based poly(arylene ether nitrile) (BPA-PEN) was prepared, in which BPA-PEN acts as a plasticizer, leading to improved fluidity of the material, thereby favoring the crystallinity of HQ/RS-PEN. Hydroquinones 26-38 proprotein convertase subtilisin/kexin type 1 inhibitor Homo sapiens 91-94 32039323-1 2020 A novel composite film of hydroquinone/resorcinol-based poly(arylene ether nitrile) (HQ/RS-PEN) improved by bisphenol A based poly(arylene ether nitrile) (BPA-PEN) was prepared, in which BPA-PEN acts as a plasticizer, leading to improved fluidity of the material, thereby favoring the crystallinity of HQ/RS-PEN. Hydroquinones 26-38 proprotein convertase subtilisin/kexin type 1 inhibitor Homo sapiens 159-162 32039323-1 2020 A novel composite film of hydroquinone/resorcinol-based poly(arylene ether nitrile) (HQ/RS-PEN) improved by bisphenol A based poly(arylene ether nitrile) (BPA-PEN) was prepared, in which BPA-PEN acts as a plasticizer, leading to improved fluidity of the material, thereby favoring the crystallinity of HQ/RS-PEN. Hydroquinones 26-38 proprotein convertase subtilisin/kexin type 1 inhibitor Homo sapiens 159-162 31899212-0 2020 Up-regulation of DNMT3b contributes to HOTAIRM1 silencing via DNA hypermethylation in cells transformed by long-term exposure to hydroquinone and workers exposed to benzene. Hydroquinones 129-141 DNA methyltransferase 3 beta Homo sapiens 17-23 31899212-0 2020 Up-regulation of DNMT3b contributes to HOTAIRM1 silencing via DNA hypermethylation in cells transformed by long-term exposure to hydroquinone and workers exposed to benzene. Hydroquinones 129-141 HOXA transcript antisense RNA, myeloid-specific 1 Homo sapiens 39-47 31899212-4 2020 But the influence of benzene or HQ on HOTAIRM1 expression in AML associated pathway is still unclear. Hydroquinones 32-34 HOXA transcript antisense RNA, myeloid-specific 1 Homo sapiens 38-46 31899212-5 2020 In the TK6 cells with short-term exposure to HQ (HQ-ST cells) or long term HQ exposure induced malignant transformed TK6 cells (HQ-MT cells), the relationship between DNMT3b and HOTAIRM1 was explored. Hydroquinones 45-47 HOXA transcript antisense RNA, myeloid-specific 1 Homo sapiens 178-186 31899212-10 2020 These suggest that long term exposure to HQ or benzene might induce the increase of DNMT3b expression and the promoter hypermethylation to silence the expression of HOTAIRM1, a possible tumor-suppressor in the AML associated carcinogenesis pathway. Hydroquinones 41-43 DNA methyltransferase 3 beta Homo sapiens 84-90 31899212-10 2020 These suggest that long term exposure to HQ or benzene might induce the increase of DNMT3b expression and the promoter hypermethylation to silence the expression of HOTAIRM1, a possible tumor-suppressor in the AML associated carcinogenesis pathway. Hydroquinones 41-43 HOXA transcript antisense RNA, myeloid-specific 1 Homo sapiens 165-173 31949167-5 2020 In Rhodobacter cytochrome bc1 complex the equivalent substitution causes a kinetics defect with longer occupancy of RISP head domain towards the quinol oxidation site. Hydroquinones 145-151 brain cytoplasmic RNA 1 Mus musculus 26-29 31949167-5 2020 In Rhodobacter cytochrome bc1 complex the equivalent substitution causes a kinetics defect with longer occupancy of RISP head domain towards the quinol oxidation site. Hydroquinones 145-151 ubiquinol-cytochrome c reductase, Rieske iron-sulfur polypeptide 1 Mus musculus 116-120 30097722-3 2018 AOX catalyzes the oxidation of quinol and the reduction of oxygen into water. Hydroquinones 31-37 alternative oxidase 2 Arabidopsis thaliana 0-3 30062552-2 2018 NAD(P)H:quinone oxidoreductase 1 (NQO-1), the enzyme responsible for biotransformation of quinones into hydroquinones, was examined for its involvement in these endothelium-dependent augmentations, establishing a link between the metabolism of quinones by NQO-1 and biased sGC activity. Hydroquinones 104-117 NAD(P)H quinone dehydrogenase 1 Rattus norvegicus 0-32 30062552-2 2018 NAD(P)H:quinone oxidoreductase 1 (NQO-1), the enzyme responsible for biotransformation of quinones into hydroquinones, was examined for its involvement in these endothelium-dependent augmentations, establishing a link between the metabolism of quinones by NQO-1 and biased sGC activity. Hydroquinones 104-117 NAD(P)H quinone dehydrogenase 1 Rattus norvegicus 34-39 30118240-2 2018 Key to their assembly is the development of a stereocontrolled p-quinol functionalization sequence which enables rapid access to DDO C-ring stereopolyads from simple precursors. Hydroquinones 65-71 D-aspartate oxidase Homo sapiens 129-132 28578385-1 2017 NQO1 is a FAD-binding protein that can form homodimers and reduce quinones to hydroquinones, and a growing body of evidence currently suggests that NQO1 is dramatically elevated in solid cancers. Hydroquinones 78-91 NAD(P)H quinone dehydrogenase 1 Homo sapiens 0-4 29937372-3 2018 Here, we have incorporated an alternative quinol oxidase (AOX) into mammalian heart mitochondrial membranes to introduce a competing pathway for quinol oxidation and test for channeling. Hydroquinones 42-48 acyl-CoA oxidase 1 Homo sapiens 58-61 29937372-5 2018 Therefore, the quinol generated in supercomplexes by complex I is reoxidized more rapidly outside the supercomplex by AOX than inside the supercomplex by complex III. Hydroquinones 15-21 acyl-CoA oxidase 1 Homo sapiens 118-121 29705394-0 2018 Functional flexibility of electron flow between quinol oxidation Qo site of cytochrome bc1 and cytochrome c revealed by combinatory effects of mutations in cytochrome b, iron-sulfur protein and cytochrome c1. Hydroquinones 48-54 mitochondrially encoded cytochrome b Homo sapiens 76-88 29705394-1 2018 Transfer of electron from quinol to cytochrome c is an integral part of catalytic cycle of cytochrome bc1. Hydroquinones 26-32 cytochrome c, somatic Homo sapiens 36-48 29705394-2 2018 It is a multi-step reaction involving: i) electron transfer from quinol bound at the catalytic Qo site to the Rieske iron-sulfur ([2Fe-2S]) cluster, ii) large-scale movement of a domain containing [2Fe-2S] cluster (ISP-HD) towards cytochrome c1, iii) reduction of cytochrome c1 by reduced [2Fe-2S] cluster, iv) reduction of cytochrome c by cytochrome c1. Hydroquinones 65-71 cytochrome c, somatic Homo sapiens 231-243 28681474-1 2017 In vivo specific isotope labeling at the residue or substituent level is used to probe menasemiquinone (MSK) binding to the quinol oxidation site of respiratory nitrate reductase A (NarGHI) from E. coli. Hydroquinones 124-130 salt inducible kinase 1 Homo sapiens 104-107 28645578-4 2017 Consistently, quinones are easier than hydroquinones in Nrf2 activation and ARE-driven antioxidant protein expressions. Hydroquinones 39-52 NFE2 like bZIP transcription factor 2 Homo sapiens 56-60 30134616-1 2018 The sea is a rich source of biological active compounds, among which terpenyl-quinones/hydroquinones constitute a family of secondary metabolites with diverse pharmacological properties. Hydroquinones 87-100 S13 erythroblastosis (avian) oncogene homolog Homo sapiens 4-7 29025057-1 2017 NRH: quinone oxidoreductase 2 (NQO2) is a cytosolic and ubiquitously expressed flavoprotein that catalyzes the two-electron reduction of quinone to hydroquinones. Hydroquinones 148-161 N-ribosyldihydronicotinamide quinone reductase 2 Mus musculus 0-29 29025057-1 2017 NRH: quinone oxidoreductase 2 (NQO2) is a cytosolic and ubiquitously expressed flavoprotein that catalyzes the two-electron reduction of quinone to hydroquinones. Hydroquinones 148-161 N-ribosyldihydronicotinamide quinone reductase 2 Mus musculus 31-35 28578385-1 2017 NQO1 is a FAD-binding protein that can form homodimers and reduce quinones to hydroquinones, and a growing body of evidence currently suggests that NQO1 is dramatically elevated in solid cancers. Hydroquinones 78-91 NAD(P)H quinone dehydrogenase 1 Homo sapiens 148-152 27508986-2 2016 The analogue, H2B-Q, consists of the redox-active quinone segment found in ubiquinone, 2,3-dimethoxy-1,4-benzoquinone, coupled to a boron-dipyrromethene (BODIPY) fluorophore segment that both imparts lipophilicity in lieu of the isoprenyl tail of ubiquinone, and reports on redox changes at the quinone/quinol segment. Hydroquinones 303-309 H2B clustered histone 21 Homo sapiens 14-19 27913299-2 2017 NQO1 reduces quinones to hydroquinones using NADH as an electron donor and consequently increases the intracellular NAD+/NADH ratio. Hydroquinones 25-38 NAD(P)H quinone dehydrogenase 1 Homo sapiens 0-4 27758861-3 2016 Mechanistically, the electron transfer reaction requires docking of its Rieske iron-sulfur protein (ISP) subunit to the quinol oxidation site (QP) of the complex. Hydroquinones 120-126 ubiquinol-cytochrome c reductase, Rieske iron-sulfur polypeptide 1 Homo sapiens 72-98 27502282-5 2016 PA1024 could reduce a broad spectrum of quinone substrates via a Ping Pong Bi Bi steady-state kinetic mechanism, generating the corresponding hydroquinones. Hydroquinones 142-155 nitronate monooxygenase Pseudomonas aeruginosa PAO1 0-6 27656164-7 2016 These results lead us to conclude that all quinol species of E. coli can reduce (i.e., activate) the sensor ArcB and all three quinones oxidize (i.e., de-activate) it. Hydroquinones 43-49 hypothetical protein Escherichia coli 108-112 27432958-5 2016 bc1-CytcO quinol oxidation-oxygen-reduction activities in mitochondria in which Rcf1 or Rcf2 were removed genetically (strains rcf1Delta and rcf2Delta, respectively). Hydroquinones 10-16 Rcf1p Saccharomyces cerevisiae S288C 80-84 27432958-5 2016 bc1-CytcO quinol oxidation-oxygen-reduction activities in mitochondria in which Rcf1 or Rcf2 were removed genetically (strains rcf1Delta and rcf2Delta, respectively). Hydroquinones 10-16 Rcf2p Saccharomyces cerevisiae S288C 88-92 26333016-0 2016 Transcriptional and post-translational modifications of B-Raf in quinol-thioether induced tuberous sclerosis renal cell carcinoma. Hydroquinones 65-71 B-Raf proto-oncogene, serine/threonine kinase Rattus norvegicus 56-61 26798996-2 2016 In this study, a refined method to determine the specific activity of a single quinol oxidase is exemplarily described for the alternative oxidase (AOX) isoform AOX1A from Arabidopsis thaliana and its corresponding mutants, using the respiratory chain of an Escherichia coli cytochrome bo and bd-I oxidase double mutant as a source to provide electrons necessary for O2 reduction via quinol oxidases. Hydroquinones 79-85 alternative oxidase 2 Arabidopsis thaliana 127-146 26798996-2 2016 In this study, a refined method to determine the specific activity of a single quinol oxidase is exemplarily described for the alternative oxidase (AOX) isoform AOX1A from Arabidopsis thaliana and its corresponding mutants, using the respiratory chain of an Escherichia coli cytochrome bo and bd-I oxidase double mutant as a source to provide electrons necessary for O2 reduction via quinol oxidases. Hydroquinones 79-85 alternative oxidase 2 Arabidopsis thaliana 148-151 26798996-2 2016 In this study, a refined method to determine the specific activity of a single quinol oxidase is exemplarily described for the alternative oxidase (AOX) isoform AOX1A from Arabidopsis thaliana and its corresponding mutants, using the respiratory chain of an Escherichia coli cytochrome bo and bd-I oxidase double mutant as a source to provide electrons necessary for O2 reduction via quinol oxidases. Hydroquinones 79-85 alternative oxidase 1A Arabidopsis thaliana 161-166 26887982-0 2016 The cannabinoid quinol VCE-004.8 alleviates bleomycin-induced scleroderma and exerts potent antifibrotic effects through peroxisome proliferator-activated receptor-gamma and CB2 pathways. Hydroquinones 16-22 peroxisome proliferator activated receptor gamma Mus musculus 121-169 26887982-0 2016 The cannabinoid quinol VCE-004.8 alleviates bleomycin-induced scleroderma and exerts potent antifibrotic effects through peroxisome proliferator-activated receptor-gamma and CB2 pathways. Hydroquinones 16-22 cannabinoid receptor 2 (macrophage) Mus musculus 174-177 26887982-4 2016 We have developed a non-thiophilic and chemically stable derivative of the CBD quinol (VCE-004.8) that behaves as a dual agonist of PPARgamma and CB2 receptors, VCE-004.8 inhibited TGFbeta-induced Col1A2 gene transcription and collagen synthesis. Hydroquinones 79-85 peroxisome proliferator activated receptor gamma Mus musculus 132-141 26887982-4 2016 We have developed a non-thiophilic and chemically stable derivative of the CBD quinol (VCE-004.8) that behaves as a dual agonist of PPARgamma and CB2 receptors, VCE-004.8 inhibited TGFbeta-induced Col1A2 gene transcription and collagen synthesis. Hydroquinones 79-85 cannabinoid receptor 2 (macrophage) Mus musculus 146-149 26887982-4 2016 We have developed a non-thiophilic and chemically stable derivative of the CBD quinol (VCE-004.8) that behaves as a dual agonist of PPARgamma and CB2 receptors, VCE-004.8 inhibited TGFbeta-induced Col1A2 gene transcription and collagen synthesis. Hydroquinones 79-85 transforming growth factor, beta 1 Mus musculus 181-188 26887982-4 2016 We have developed a non-thiophilic and chemically stable derivative of the CBD quinol (VCE-004.8) that behaves as a dual agonist of PPARgamma and CB2 receptors, VCE-004.8 inhibited TGFbeta-induced Col1A2 gene transcription and collagen synthesis. Hydroquinones 79-85 collagen, type I, alpha 2 Mus musculus 197-203 23688079-5 2014 In particular, the cytochrome b subunit offers two distinct active sites that can be targeted for inhibition - the quinol oxidation site and the quinone reduction site. Hydroquinones 115-121 mitochondrially encoded cytochrome b Homo sapiens 19-31 25151970-9 2014 We further demonstrated that NQO1 mediated reduction to unstable hydroquinones and subsequent redox cycling was important for the activation of the ER stress response and toxicity for both AC and MD. Hydroquinones 65-78 NAD(P)H quinone dehydrogenase 1 Rattus norvegicus 29-33 24884893-1 2014 BACKGROUND NAD(P)H: quinone oxidoreductase 1 (NQO1) plays a central role in catalyzing the two-electron reduction of quinoid compounds into hydroquinones. Hydroquinones 140-153 NAD(P)H quinone dehydrogenase 1 Homo sapiens 11-44 24884893-1 2014 BACKGROUND NAD(P)H: quinone oxidoreductase 1 (NQO1) plays a central role in catalyzing the two-electron reduction of quinoid compounds into hydroquinones. Hydroquinones 140-153 NAD(P)H quinone dehydrogenase 1 Homo sapiens 46-50 26245902-2 2015 Its operation involves a large scale movement of a head domain of iron-sulfur protein (ISP-HD), which functionally connects the catalytic quinol oxidation Qo site in cytochrome b with cytochrome c1. Hydroquinones 138-144 mitochondrially encoded cytochrome b Homo sapiens 166-178 25602258-1 2015 BACKGROUND: NAD(P)H: quinone oxidoreductase 1 (NQO1), an obligate two-electron reductase, plays an important role in reducing reactive quinones to less reactive and less toxic hydroquinones. Hydroquinones 177-190 NAD(P)H quinone dehydrogenase 1 Homo sapiens 13-46 25602258-1 2015 BACKGROUND: NAD(P)H: quinone oxidoreductase 1 (NQO1), an obligate two-electron reductase, plays an important role in reducing reactive quinones to less reactive and less toxic hydroquinones. Hydroquinones 177-190 NAD(P)H quinone dehydrogenase 1 Homo sapiens 48-52 24830960-4 2014 NQO1 catalyzes the two-electron reduction of quinones to hydroquinones, thereby preventing the formation of ROS. Hydroquinones 57-70 NAD(P)H quinone dehydrogenase 1 Homo sapiens 0-4 24213850-1 2014 NAD(P)H: quinone oxidoreductase 1 (NQO1) is an important enzyme which can catalyze the two-electron reduction of quinoid compounds into hydroquinones. Hydroquinones 136-149 NAD(P)H quinone dehydrogenase 1 Homo sapiens 0-33 24213850-1 2014 NAD(P)H: quinone oxidoreductase 1 (NQO1) is an important enzyme which can catalyze the two-electron reduction of quinoid compounds into hydroquinones. Hydroquinones 136-149 NAD(P)H quinone dehydrogenase 1 Homo sapiens 35-39 24447297-5 2014 Furthermore, the effects of quinols on Mtb NDH-2 catalytic activity demonstrate the presence of two binding sites for quinone ligands, one favoring the reduced form and the other favoring the oxidized form. Hydroquinones 28-35 DExH-box helicase 9 Homo sapiens 43-48 23563617-0 2013 Tandem oxidation-oxidative C-H/C-H cross-coupling: synthesis of arylquinones from hydroquinones. Hydroquinones 82-95 churchill domain containing 1 Homo sapiens 27-34 23749485-2 2013 NAD(P)H:quinone oxidoreductase 1 (NQO1) is a cytosolic enzyme that catalyzes the two-electron reduction of quinoid compounds into hydroquinones. Hydroquinones 130-143 NAD(P)H quinone dehydrogenase 1 Homo sapiens 0-32 23749485-2 2013 NAD(P)H:quinone oxidoreductase 1 (NQO1) is a cytosolic enzyme that catalyzes the two-electron reduction of quinoid compounds into hydroquinones. Hydroquinones 130-143 NAD(P)H quinone dehydrogenase 1 Homo sapiens 34-38 23563617-1 2013 A concise and efficient approach to arylquinones from widely available hydroquinones has been developed through a tandem reaction involving the oxidation of hydroquinones and subsequent oxidative C-H/C-H cross-coupling of the resulting quinones with arenes. Hydroquinones 71-84 churchill domain containing 1 Homo sapiens 196-203 22972504-1 2013 NAD(P)H:quinone oxidoreductase 1 (NQO1) is a cytosolic flavoprotein that catalyzes the two-electron reduction of quinoid compounds into hydroquinones, thus protecting cells from oxidative damage. Hydroquinones 136-149 NAD(P)H quinone dehydrogenase 1 Homo sapiens 0-32 22972504-1 2013 NAD(P)H:quinone oxidoreductase 1 (NQO1) is a cytosolic flavoprotein that catalyzes the two-electron reduction of quinoid compounds into hydroquinones, thus protecting cells from oxidative damage. Hydroquinones 136-149 NAD(P)H quinone dehydrogenase 1 Homo sapiens 34-38 22940066-4 2012 Similarly, the rate of superoxide production by the complex III site of quinol oxidation (site III(Qo)) was calibrated to the reduction state of endogenous cytochrome b(566). Hydroquinones 72-78 cytochrome b, mitochondrial Rattus norvegicus 156-168 23109831-1 2012 NAD(P)H:quinone oxidoreductase 1 (NQO1) catalyses the reduction of quinoid compounds to hydroquinones, preventing the generation of free radicals and reactive oxygen. Hydroquinones 88-101 NAD(P)H quinone dehydrogenase 1 Homo sapiens 0-32 22547613-2 2012 The complex contains two distinct quinone-binding sites, the quinol oxidation site of the bc(1) complex (Q(o)) and the quinone reduction site (Q(i)), located on opposite sides of the membrane within cytochrome b. Hydroquinones 61-67 CYTB Plasmodium falciparum 199-211 22458729-3 2012 Spectroscopic characterization of CymA from Shewanella oneidensis strain MR-1 identifies three low-spin His/His co-ordinated c-haems and a single high-spin c-haem with His/H(2)O co-ordination lying adjacent to the quinol-binding site. Hydroquinones 214-220 cytochrome c Shewanella oneidensis MR-1 34-38 22458729-7 2012 Spectroscopic studies suggest that CymA requires a non-haem co-factor for quinol oxidation and that the reduced enzyme forms a 1:1 complex with its redox partner Fcc3 (flavocytochrome c3 fumarate reductase). Hydroquinones 74-80 cytochrome c Shewanella oneidensis MR-1 35-39 23109831-1 2012 NAD(P)H:quinone oxidoreductase 1 (NQO1) catalyses the reduction of quinoid compounds to hydroquinones, preventing the generation of free radicals and reactive oxygen. Hydroquinones 88-101 NAD(P)H quinone dehydrogenase 1 Homo sapiens 34-38 21212280-3 2011 In mammalian cells, quinols are proposed to inhibit the thioredoxin/thioredoxin reductase system, which is absent from trypanosomes. Hydroquinones 20-27 thioredoxin Homo sapiens 56-67 22984577-2 2012 The 2-electron reduction of quinones to hydroquinones by NQO1 is believed to be a detoxification process since this reaction bypasses the formation of the highly reactive semiquinone. Hydroquinones 40-53 NAD(P)H quinone dehydrogenase 1 Homo sapiens 57-61 21693435-0 2011 cAMP-dependent cytosolic mislocalization of p27(kip)-cyclin D1 during quinol-thioether-induced tuberous sclerosis renal cell carcinoma. Hydroquinones 70-76 calcium and integrin binding 1 Rattus norvegicus 44-52 21693435-0 2011 cAMP-dependent cytosolic mislocalization of p27(kip)-cyclin D1 during quinol-thioether-induced tuberous sclerosis renal cell carcinoma. Hydroquinones 70-76 cyclin D1 Rattus norvegicus 53-62 21479364-1 2011 NAD(P)H:quinone oxidoreductase 1 (NQO1), is a cytosolic flavoenzyme that catalyzes the two-electron reduction of quinones into hydroquinones. Hydroquinones 127-140 NAD(P)H quinone dehydrogenase 1 Homo sapiens 0-32 21479364-1 2011 NAD(P)H:quinone oxidoreductase 1 (NQO1), is a cytosolic flavoenzyme that catalyzes the two-electron reduction of quinones into hydroquinones. Hydroquinones 127-140 NAD(P)H quinone dehydrogenase 1 Homo sapiens 34-38 21212280-3 2011 In mammalian cells, quinols are proposed to inhibit the thioredoxin/thioredoxin reductase system, which is absent from trypanosomes. Hydroquinones 20-27 thioredoxin Homo sapiens 68-79 20873851-0 2010 Scales of oxidation potentials, pK(a), and BDE of various hydroquinones and catechols in DMSO. Hydroquinones 58-71 homeobox D13 Homo sapiens 43-46 21272324-11 2011 In the cases of cyoA and cydB mutants, arcA, fnr, fur, cydB (for cyoA mutant), and cyoA (for cydB mutant) genes were up-regulated, which may be due to incomplete oxidation of quinol. Hydroquinones 175-181 arginine deiminase Escherichia coli 39-43 22393995-1 2011 OBJECTIVE: NAD(P)H: quinone oxidoreductase 1 (NQO1) is a cytosolic flavoprotein that catalyzes the two- electron reduction of quinoid compounds into hydroquinones. Hydroquinones 149-162 NAD(P)H quinone dehydrogenase 1 Homo sapiens 11-44 22393995-1 2011 OBJECTIVE: NAD(P)H: quinone oxidoreductase 1 (NQO1) is a cytosolic flavoprotein that catalyzes the two- electron reduction of quinoid compounds into hydroquinones. Hydroquinones 149-162 NAD(P)H quinone dehydrogenase 1 Homo sapiens 46-50 21671859-8 2011 According to different structural features, direct HIF-1 inhibitors are divided into several groups: polyamides, quinols and naphthoquinone spiroketal analogues, shikonin derivatives, epidithiodiketopiperazines, and two representative drugs: echinomycin and bortezomib. Hydroquinones 113-120 hypoxia inducible factor 1 subunit alpha Homo sapiens 51-56 20396966-0 2010 Crystal structures of human FIH-1 in complex with quinol family inhibitors. Hydroquinones 50-56 hypoxia inducible factor 1 subunit alpha inhibitor Homo sapiens 28-33 20599909-4 2010 Quinols, which due to their Michael acceptor moiety react readily with cysteine residues in selective cellular proteins, are good candidates for potential Nrf2 inducing chemopreventive agents. Hydroquinones 0-7 NFE2 like bZIP transcription factor 2 Homo sapiens 155-159 20396966-5 2010 Quinol family compounds such as 5-chloro-7-iodo-8-hydroxyquinoline (Clioquinol) have been shown to inhibit the hydroxylation activity of FIH-1. Hydroquinones 0-6 hypoxia inducible factor 1 subunit alpha inhibitor Homo sapiens 137-142 19325183-1 2009 Quinol oxidation at center P of the cytochrome bc(1) complex involves bifurcated electron transfer to the Rieske iron-sulfur protein and cytochrome b. Hydroquinones 0-6 cytochrome b Saccharomyces cerevisiae S288C 36-48 19830680-2 2010 The molecular mechanisms of PCB toxicity have been attributed to the toxicological properties of its metabolites, such as hydroquinones, formed by cytochrome-P-450 oxidation. Hydroquinones 122-135 cytochrome P450, family 2, subfamily g, polypeptide 1 Rattus norvegicus 147-163 19325183-6 2009 The rate and E(a) of the slow reaction of quinol with oxygen that are observed after cytochrome b is reduced were unaffected by the E272Q substitution, whereas the Y185F mutation modified only its rate. Hydroquinones 42-48 cytochrome b Saccharomyces cerevisiae S288C 85-97 19176478-2 2009 The addition of ilicicolin to the oxidized complex resulted in a non-linear inhibition of the extent of cytochrome b reduction by quinol together with a shift of the reduced b(H) heme spectrum, indicating electron transfer between monomers. Hydroquinones 130-136 cytochrome b Saccharomyces cerevisiae S288C 104-116 19544866-6 2009 In addition to As(III) oxidation by semiquinone radicals, hydroquinones that were also produced during quinone reduction reduced As(V) to As(III) at neutral and acidic pH values (less than 12%) but not at alkaline pH. Hydroquinones 58-71 SRC proto-oncogene, non-receptor tyrosine kinase Homo sapiens 129-134 32688810-1 2008 Alternative oxidase (AOX) is a terminal quinol oxidase located in the respiratory electron transport chain that catalyses the oxidation of quinol and the reduction of oxygen to water. Hydroquinones 40-46 acyl-CoA oxidase 1 Homo sapiens 21-24 18587424-3 2008 PMX464 is a novel thiol-reactive quinol thought to inhibit the Trx/TrxR system. Hydroquinones 33-39 thioredoxin Homo sapiens 63-66 18587424-3 2008 PMX464 is a novel thiol-reactive quinol thought to inhibit the Trx/TrxR system. Hydroquinones 33-39 thioredoxin reductase 1 Homo sapiens 67-71 32688810-1 2008 Alternative oxidase (AOX) is a terminal quinol oxidase located in the respiratory electron transport chain that catalyses the oxidation of quinol and the reduction of oxygen to water. Hydroquinones 40-46 acyl-CoA oxidase 1 Homo sapiens 0-19 19536200-5 2009 Quinone/quinol malfunction was postulated to activate ArcA, Fur, and PhoB in this study. Hydroquinones 8-14 arginine deiminase Escherichia coli 54-58 18635747-11 2008 Minimizing the propensity of BA derivatives to undergo one-electron reduction and glutathione conjugation while maximizing their two-electron reduction to stable Hsp90 inhibitory hydroquinones may be a useful strategy for optimizing the therapeutic index of BAs. Hydroquinones 179-192 heat shock protein 90 alpha family class A member 1 Homo sapiens 162-167 18471987-2 2008 We review the kinetics of electron transfer and inhibitor binding that reveal functional interactions between the quinol oxidation site at center P and quinone reduction site at center N in opposite monomers in conjunction with electron equilibration between the cytochrome b subunits of the dimer. Hydroquinones 114-120 mitochondrially encoded cytochrome b Homo sapiens 263-275 16520231-3 2006 Toxicity arising from the high susceptibility of quinone toward endogenous nucleophiles (Q-TOX) was detected using OxyR(+) cells, in the presence of a nitric oxide donor to promote the quinol oxidation to the corresponding quinone. Hydroquinones 185-191 thymocyte selection associated high mobility group box Homo sapiens 91-94 18215069-0 2008 Is cytochrome b glutamic acid 272 a quinol binding residue in the bc1 complex of Saccharomyces cerevisiae? Hydroquinones 36-42 cytochrome b Saccharomyces cerevisiae S288C 3-15 16600173-1 2006 The Q-cycle mechanism of the bc1 complex explains how the electron transfer from ubihydroquinone (quinol, QH2) to cytochrome (cyt) c (or c2 in bacteria) is coupled to the pumping of protons across the membrane. Hydroquinones 98-104 cytochrome c, somatic Homo sapiens 114-132 16705337-1 2006 Coordination of the carbocyclic ring of hydroquinones to electrophilic transition-metal fragments such as Mn(CO)3+ and Rh(COD)+ produces stable pi-bonded eta6-complexes that are activated to facile reversible deprotonation of the -OH groups. Hydroquinones 40-53 endothelin receptor type A Homo sapiens 83-86 16700548-1 2006 NAD(P)H quinone oxidoreductase 1 (NQO1) is a ubiquitous flavoenzyme that catalyzes two-electron reduction of quinones to hydroquinones utilizing NAD(P)H as an electron donor. Hydroquinones 121-134 NAD(P)H quinone dehydrogenase 1 Homo sapiens 0-32 16700548-1 2006 NAD(P)H quinone oxidoreductase 1 (NQO1) is a ubiquitous flavoenzyme that catalyzes two-electron reduction of quinones to hydroquinones utilizing NAD(P)H as an electron donor. Hydroquinones 121-134 NAD(P)H quinone dehydrogenase 1 Homo sapiens 34-38 16702380-1 2006 UNLABELLED: NAD(P)H:quinone oxidoreductase 1 (NQO1) is a cytosolic enzyme that catalyzes the two-electron reduction of quinoid compounds into hydroquinones, their less toxic form. Hydroquinones 142-155 NAD(P)H quinone dehydrogenase 1 Homo sapiens 12-44 16702380-1 2006 UNLABELLED: NAD(P)H:quinone oxidoreductase 1 (NQO1) is a cytosolic enzyme that catalyzes the two-electron reduction of quinoid compounds into hydroquinones, their less toxic form. Hydroquinones 142-155 NAD(P)H quinone dehydrogenase 1 Homo sapiens 46-50 18454936-2 2008 The extent of this initial cytochrome b reduction corresponded to a level of b(H) heme reduction of 33%-55% depending on the quinol/quinone ratio. Hydroquinones 125-131 cytochrome b Saccharomyces cerevisiae S288C 27-39 18180330-0 2008 Thioredoxin reductase inhibition by antitumor quinols: a quinol pharmacophore effect correlating to antiproliferative activity. Hydroquinones 46-53 peroxiredoxin 5 Homo sapiens 0-21 18180330-0 2008 Thioredoxin reductase inhibition by antitumor quinols: a quinol pharmacophore effect correlating to antiproliferative activity. Hydroquinones 46-52 peroxiredoxin 5 Homo sapiens 0-21 18180330-5 2008 In this study, we demonstrate that structural analogs containing a quinol pharmacophore inhibited TrxR with potencies correlated with their antiproliferative and cytotoxic efficacies. Hydroquinones 67-73 peroxiredoxin 5 Homo sapiens 98-102 18180330-6 2008 Benzenesulfonyl-6F-indole-substituted quinol (compound 6) irreversibly inhibited TrxR most strongly with a half-maximal inhibitory concentration of 2.7 microM after 1 h of incubation with recombinant rat TrxR. Hydroquinones 38-44 peroxiredoxin 5 Homo sapiens 81-85 18180330-6 2008 Benzenesulfonyl-6F-indole-substituted quinol (compound 6) irreversibly inhibited TrxR most strongly with a half-maximal inhibitory concentration of 2.7 microM after 1 h of incubation with recombinant rat TrxR. Hydroquinones 38-44 peroxiredoxin 5 Homo sapiens 204-208 18180330-8 2008 Moreover, TrxR activity in lysates of HCT 116 cells treated with apoptosis-inducing doses of quinols was significantly reduced. Hydroquinones 93-100 peroxiredoxin 5 Homo sapiens 10-14 18180330-9 2008 From the results obtained, we propose that TrxR inhibition is a critical cellular event that contributes to the proapoptotic effects of quinols. Hydroquinones 136-143 peroxiredoxin 5 Homo sapiens 43-47 18272433-0 2008 Quinol type compound in cytochrome c preparations leads to non-enzymatic reduction of cytochrome c during the measurement of complex III activity. Hydroquinones 0-6 cytochrome c, somatic Homo sapiens 24-36 18272433-0 2008 Quinol type compound in cytochrome c preparations leads to non-enzymatic reduction of cytochrome c during the measurement of complex III activity. Hydroquinones 0-6 cytochrome c, somatic Homo sapiens 86-98 18272433-4 2008 Analysis of cytochrome c (producing a high-background) by fast protein liquid chromatography yielded a contaminant peak containing a lipid extractable component with redox spectra and mass spectroscopy fragmentation suggestive of a quinol. Hydroquinones 232-238 cytochrome c, somatic Homo sapiens 12-24 17942934-1 2007 NRH:quinone oxidoreductase 2 (NQO2) is a cytosolic flavoprotein that catalyzes the two-electron reduction of quinones and quinoid compounds to hydroquinones. Hydroquinones 143-156 N-ribosyldihydronicotinamide quinone reductase 2 Mus musculus 0-28 17942934-1 2007 NRH:quinone oxidoreductase 2 (NQO2) is a cytosolic flavoprotein that catalyzes the two-electron reduction of quinones and quinoid compounds to hydroquinones. Hydroquinones 143-156 N-ribosyldihydronicotinamide quinone reductase 2 Mus musculus 30-34 17396564-1 2007 Phytogenous flavonoid-containing agents (PFCA) are able to initiate electron flow bypassing the NAD-dependent region of respiratory chain, which is related with the activity of DT-diaphorase catalyzing two-electron reduction of quinones to hydroquinones and hydrogen peroxide in the presence of NADH and oxygen. Hydroquinones 240-253 NAD(P)H quinone dehydrogenase 1 Homo sapiens 177-190 17008316-2 2006 The quinol oxidase (Q(o)) site in this complex oxidizes a hydroquinone (quinol), reducing two one-electron carriers, a low potential cytochrome b heme and the "Rieske" iron-sulfur cluster. Hydroquinones 4-10 mitochondrially encoded cytochrome b Homo sapiens 133-145 17000671-4 2006 EXPERIMENTAL DESIGN: We investigated whether two novel anticancer drugs AJM290 and AW464 (quinols), which inhibit Trx-1 function, can inhibit the HIF pathway. Hydroquinones 90-97 thioredoxin Homo sapiens 114-119 16756956-8 2006 In further studies we determined other cellular proteins which bind to an immobilized quinol analog, and identified several proteins including beta-tubulin, heat shock protein 60, and peroxiredoxin 1 as potential molecular targets of quinols that may contribute to their proapoptotic and antiproliferative effects. Hydroquinones 234-241 peroxiredoxin 1 Homo sapiens 184-199 16417979-13 2006 The 5-LOX and HET-CAM-assays provide good evidence that hydroquinones in the defence fluid of Palembus ocularis have anti-inflammatory properties which would explain the traditional use of this beetle to treat asthma. Hydroquinones 56-69 calmodulin 3 Homo sapiens 18-21 15312779-1 2004 Cytochrome bc(1) is an integral membrane protein complex essential for cellular respiration and photosynthesis; it couples electron transfer from quinol to cytochrome c to proton translocation across the membrane. Hydroquinones 146-152 LOC104968582 Bos taurus 156-168 15867391-0 2005 Elucidation of thioredoxin as a molecular target for antitumor quinols. Hydroquinones 63-70 thioredoxin Homo sapiens 15-26 15867391-6 2005 Molecular modeling predicted covalent irreversible binding between quinol analogues and cysteine residues 32 and 35 of thioredoxin, thereby inhibiting enzyme activity. Hydroquinones 67-73 thioredoxin Homo sapiens 119-130 15867391-10 2005 Results are consistent with a mechanism of action of novel antitumor quinols involving inhibition of the small redox protein thioredoxin. Hydroquinones 69-76 thioredoxin Homo sapiens 125-136 15833742-1 2005 The kinetics and extent of cytochrome b reduced by quinol in the presence of variable concentrations of antimycin decreased non-linearly and could only be fitted to a model in which electrons entering through one center N can equilibrate between the two cytochrome b subunits of the bc(1) complex dimer. Hydroquinones 51-57 cytochrome b Saccharomyces cerevisiae S288C 27-39 15833742-1 2005 The kinetics and extent of cytochrome b reduced by quinol in the presence of variable concentrations of antimycin decreased non-linearly and could only be fitted to a model in which electrons entering through one center N can equilibrate between the two cytochrome b subunits of the bc(1) complex dimer. Hydroquinones 51-57 cytochrome b Saccharomyces cerevisiae S288C 254-266 14993213-1 2004 Previous electron microscopic studies of bacterial RCLH1 complexes demonstrated both circular and elliptical conformations of the LH1 ring, and this implied flexibility has been suggested to allow passage of quinol from the Q(B) site of the RC to the quinone pool prior to reduction of the cytochrome bc(1) complex. Hydroquinones 208-214 procollagen-lysine,2-oxoglutarate 5-dioxygenase 1 Homo sapiens 53-56 15240547-1 2004 PURPOSE: NAD(P)H: quinone oxidoreductase (NQO(1)) catalyzes the two-electron reduction of quinones to hydroquinones. Hydroquinones 103-116 crystallin zeta Homo sapiens 19-41 15240547-1 2004 PURPOSE: NAD(P)H: quinone oxidoreductase (NQO(1)) catalyzes the two-electron reduction of quinones to hydroquinones. Hydroquinones 103-116 NAD(P)H quinone dehydrogenase 1 Homo sapiens 43-49 15157909-7 2004 The data from both experiments, in the system devoid of quinol being the electron donor to cytochrome b(6), suggest that in case of electron transfer from cytochrome f to plastocyanin electron transfer can either bypass cytochrome f or the Rieske iron-sulfur protein can be reduced prior to its movement to the quinol binding site of cytochrome b(6). Hydroquinones 56-62 mitochondrially encoded cytochrome b Homo sapiens 91-103 15157909-7 2004 The data from both experiments, in the system devoid of quinol being the electron donor to cytochrome b(6), suggest that in case of electron transfer from cytochrome f to plastocyanin electron transfer can either bypass cytochrome f or the Rieske iron-sulfur protein can be reduced prior to its movement to the quinol binding site of cytochrome b(6). Hydroquinones 311-317 mitochondrially encoded cytochrome b Homo sapiens 91-103 15625561-1 2004 Cytochrome b is the central catalytic subunit of the quinol:cytochrome c oxidoreductase of complex III of the mitochondrial oxidative phosphorylation system and is essential to the viability of most eukaryotic cells. Hydroquinones 53-59 mitochondrially encoded cytochrome b Homo sapiens 0-12 15102952-8 2004 NQO1 can generate hydroquinones that are redox active, and the O(2)(*)(-) scavenging activity of NQO1 may allow protection against O(2)(*)(-) at the site of hydroquinone generation. Hydroquinones 18-31 NAD(P)H quinone dehydrogenase 1 Homo sapiens 0-4 14503001-4 2003 Three of these enzymes utilize a quinol substrate, with two oxidizing the quinol (AOX and PTOX) and one hydroxylating it (DMQ hydroxylase). Hydroquinones 33-39 acyl-CoA oxidase 1 Homo sapiens 82-85 14500388-1 2003 NADPH:quinone oxidoreductase (NQO(1)), a homodimeric, ubiquitous, flavoprotein, catalyzes the two-electron reduction of quinones to hydroquinones. Hydroquinones 132-145 crystallin zeta Homo sapiens 6-28 14500388-1 2003 NADPH:quinone oxidoreductase (NQO(1)), a homodimeric, ubiquitous, flavoprotein, catalyzes the two-electron reduction of quinones to hydroquinones. Hydroquinones 132-145 NAD(P)H quinone dehydrogenase 1 Homo sapiens 30-36 12762808-0 2003 New sesquiterpene quinols from a Micronesian sponge, Aka sp. Hydroquinones 18-25 neurogenin 1 Homo sapiens 53-56 12899636-6 2003 This indicates that no further proteins are required for electron transfer between the quinone pool and fumarate if we assume direct reduction of CymA by quinols. Hydroquinones 154-161 cytochrome c Shewanella oneidensis MR-1 146-150 14503001-4 2003 Three of these enzymes utilize a quinol substrate, with two oxidizing the quinol (AOX and PTOX) and one hydroxylating it (DMQ hydroxylase). Hydroquinones 33-39 coenzyme Q7, hydroxylase Homo sapiens 122-137 14503001-4 2003 Three of these enzymes utilize a quinol substrate, with two oxidizing the quinol (AOX and PTOX) and one hydroxylating it (DMQ hydroxylase). Hydroquinones 74-80 acyl-CoA oxidase 1 Homo sapiens 82-85 11809856-1 2002 NAD(P)H:quinone oxidoreductase (NQO1) and dihydronicotinamide riboside:quinone oxidoreductases (NQO2) are cytosolic flavoproteins that catalyze the two-electron reduction of quinones and quinoid compounds to hydroquinones, thereby promoting detoxification and preventing the formation of highly reactive oxygen species, which lead to DNA and cell damage. Hydroquinones 208-221 crystallin zeta Homo sapiens 8-30 12270134-5 2002 Inhibition of nSMase by ubiquinols displayed similarities with inhibition by manumycin and the hydroquinones F11334"s, suggesting that these compounds could act as structural analogs of ubiquinol. Hydroquinones 95-108 sphingomyelin phosphodiesterase 2 Homo sapiens 14-20 12372827-10 2002 Under these conditions quinols are known to produce superoxide, and because mitoQ is localized within the mitochondrial matrix this suggests that production of superoxide in the matrix was sufficient to activate UCP2. Hydroquinones 23-30 uncoupling protein 2 Rattus norvegicus 212-216 11809856-1 2002 NAD(P)H:quinone oxidoreductase (NQO1) and dihydronicotinamide riboside:quinone oxidoreductases (NQO2) are cytosolic flavoproteins that catalyze the two-electron reduction of quinones and quinoid compounds to hydroquinones, thereby promoting detoxification and preventing the formation of highly reactive oxygen species, which lead to DNA and cell damage. Hydroquinones 208-221 NAD(P)H quinone dehydrogenase 1 Homo sapiens 32-36 11809856-1 2002 NAD(P)H:quinone oxidoreductase (NQO1) and dihydronicotinamide riboside:quinone oxidoreductases (NQO2) are cytosolic flavoproteins that catalyze the two-electron reduction of quinones and quinoid compounds to hydroquinones, thereby promoting detoxification and preventing the formation of highly reactive oxygen species, which lead to DNA and cell damage. Hydroquinones 208-221 N-ribosyldihydronicotinamide:quinone reductase 2 Homo sapiens 96-100 11700316-4 2002 This stoichiometry was obtained when the inhibitors were titrated in cytochrome c reductase assays and in reactions of quinol with enzyme in which the inhibitors block pre-steady state reduction of cytochrome b. Hydroquinones 119-125 cytochrome b Saccharomyces cerevisiae S288C 198-210 11735393-0 2001 Deuterium kinetic isotope effects in the p-side pathway for quinol oxidation by the cytochrome b(6)f complex. Hydroquinones 60-66 mitochondrially encoded cytochrome b Homo sapiens 84-96 11697117-0 2001 Superoxide dismutase enhances chain-breaking antioxidant capability of hydroquinones. Hydroquinones 71-84 superoxide dismutase 1 Homo sapiens 0-20 11248224-1 2001 The enzyme DT-diaphorase mediates the two-electron reduction of quinones to hydroquinones. Hydroquinones 76-89 NAD(P)H quinone dehydrogenase 1 Rattus norvegicus 11-24 11035251-1 2000 An extensive body of evidence supports the conclusion that by catalyzing obligatory two-electron reductions of quinones to hydroquinones, NAD(P)H:quinone reductase (QR1) protects cells against the deleterious effects of redox cycling of quinones, their ability to deplete glutathione, and to produce neoplasia. Hydroquinones 123-136 crystallin, zeta Mus musculus 146-163 11035251-1 2000 An extensive body of evidence supports the conclusion that by catalyzing obligatory two-electron reductions of quinones to hydroquinones, NAD(P)H:quinone reductase (QR1) protects cells against the deleterious effects of redox cycling of quinones, their ability to deplete glutathione, and to produce neoplasia. Hydroquinones 123-136 NAD(P)H dehydrogenase, quinone 1 Mus musculus 165-168 11035252-5 2000 QR2 is also capable of reducing quinones to hydroquinones, but unlike QR1, cannot use NAD(P)H. Hydroquinones 44-57 N-ribosyldihydronicotinamide:quinone reductase 2 Homo sapiens 0-3 11035256-1 2000 DT-diaphorase, also referred to as NQO1 or NAD(P)H: quinone acceptor oxidoreductase, is a flavoprotein that catalyzes the two-electron reduction of quinones and quinonoid compounds to hydroquinones, using either NADH or NADPH as the electron donor. Hydroquinones 184-197 NAD(P)H quinone dehydrogenase 1 Homo sapiens 0-13 10788423-9 2000 Such a movement seems necessary to shuttle electrons from the membrane-soluble quinol to the extramembrane heme of cytochrome c(1). Hydroquinones 79-85 cytochrome c, somatic Homo sapiens 115-127