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Information on EC 1.8.4.1 - glutathione-homocystine transhydrogenase for references in articles please use BRENDA:EC1.8.4.1Please wait a moment until all data is loaded. This message will disappear when all data is loaded.
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The enzyme appears in viruses and cellular organisms
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glutathione-homocystine transhydrogenase
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2 glutathione + homocystine = glutathione disulfide + 2 homocysteine
the reactions catalyzed by this enzyme and by other in this subclass may be similar to those catalyzed by EC 2.5.1.18
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Cysteine and methionine metabolism
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Glutathione metabolism
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glutathione:homocystine oxidoreductase
The reactions catalysed by this enzyme and by others in this subclass may be similar to those catalysed by EC 2.5.1.18 glutathione transferase.
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transhydrogenase, glutathione-homocystine
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2 glutathione + homocystine
glutathione disulfide + 2 homocysteine
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2 lysine + homocystine
glutathione disulfide + 2 homocysteine
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cysteine + homocystine
cystine + 2 homocysteine
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GSH + homocystine
GSSG + homocysteine
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r
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GSH + homocystine
GSSG + homocysteine
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15.1
cysteine
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pH 5.2, 40°C
14.3
glutathione
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pH 5.2, 40°C
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0.056
cysteine
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pH 5.2, 40°C
0.078
glutathione
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pH 5.2, 40°C
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79000 - 80000
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gel filtration
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dimer
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2 * 35000, SDS-PAGE
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synthesis
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maximum activity is obtained by nutritional optimization using GSH (0.4%) combined with homocystine (0.01%) and glucose (0.4%), NADH (30 mM) at medium initial pH 7.8. The yield of GHTHase is increased about 1.2 times upon starvation of the culture for two days, as compared to the non-sulfur starved culture. The GHTHase activity is increased by 13.7fold
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B2ZA84_SHEEP
106
11784
TrEMBL
E3TEH5_ICTPU
106
11482
TrEMBL
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Racker, E.
Glutathione-homocystine transhydrogenase
J. Biol. Chem.
217
867-874
1955
Bos taurus
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El-Sayed, A.; Hassan, A.; Yassin, M.; Hassan, A.
Characterization of glutathione-homocystine transhydrogenase as a novel isoform of glutathione S-transferase from Aspergillus flavipes
Pharm. Chem. J.
49
373-383
2015
Aspergillus flavipes
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