Glutathione—cystine transhydrogenase

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glutathione—cystine transhydrogenase
Identifiers
EC number 1.8.4.4
CAS number 37256-49-8
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum
Gene Ontology AmiGO / EGO

In enzymology, a glutathione—cystine transhydrogenase (EC 1.8.4.4) is an enzyme that catalyzes the chemical reaction

2 glutathione + cystine \rightleftharpoons glutathione disulfide + 2 cysteine

Thus, the two substrates of this enzyme are glutathione and cystine, whereas its two products are glutathione disulfide and cysteine.

This enzyme belongs to the family of oxidoreductases, specifically those acting on a sulfur group of donors with a disulfide as acceptor. The systematic name of this enzyme class is glutathione:cystine oxidoreductase. Other names in common use include GSH-cystine transhydrogenase, and NADPH-dependent GSH-cystine transhydrogenase. This enzyme participates in cysteine metabolism and glutathione metabolism.

References[edit]

  • Nagai S, Black S (1968). "A thiol-disulfide transhydrogenase from yeast". J. Biol. Chem. 243 (8): 1942–7. PMID 5646485.