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EC 2.5.1.47 Details
EC number
2.5.1.47
Accepted name
cysteine synthase
Reaction
O-acetyl-L-serine + hydrogen sulfide = L-cysteine + acetate
Other name(s)
O-acetyl-L-serine sulfhydrylase, O-acetyl-L-serine sulfohydrolase, O-acetylserine (thiol)-lyase, O-acetylserine (thiol)-lyase A, O-acetylserine sulfhydrylase, O3-acetyl-L-serine acetate-lyase (adding hydrogen-sulfide), acetylserine sulfhydrylase, cysteine synthetase, S-sulfocysteine synthase, 3-O-acetyl-L-serine:hydrogen-sulfide 2-amino-2-carboxyethyltransferase, O3-acetyl-L-serine:hydrogen-sulfide 2-amino-2-carboxyethyltransferase
Systematic name
O-acetyl-L-serine:hydrogen-sulfide 2-amino-2-carboxyethyltransferase
CAS registry number
37290-89-4
Comment
A pyridoxal-phosphate protein. Some alkyl thiols, cyanide, pyrazole and some other heterocyclic compounds can act as acceptors. Not identical with EC 2.5.1.51 (β-pyrazolylalanine synthase), EC 2.5.1.52 (L-mimosine synthase) and EC 2.5.1.53 (uracilylalanine synthase).
History
created 1972 as EC 4.2.99.8, modified 1976, modified 1990, transferred 2002 to EC 2.5.1.47
EC Tree
2.5.1.12 created 1972, deleted 1976
2.5.1.13 created 1972, deleted 1976
2.5.1.14 created 1972, deleted 1976
2.5.1.37 created 1989, deleted 2004
2.5.1.40 created 1992, deleted 1999