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EC 2.5.1.144 Details
show Brenda entryEC number
2.5.1.144
Accepted name
S-sulfo-L-cysteine synthase (O-acetyl-L-serine-dependent)
Reaction
O-acetyl-L-serine + thiosulfate = S-sulfo-L-cysteine + acetate
Other name(s)
cysteine synthase B,
cysM (gene name),
CS26 (gene name)
Systematic name
O-acetyl-L-serine:thiosulfate 2-amino-2-carboxyethyltransferase
Comment
In plants, the activity is catalysed by a chloroplastic enzyme that plays an important role in chloroplast function and is essential for light-dependent redox regulation within the chloroplast. The bacterial enzyme also catalyses the activity of EC 2.5.1.47, cysteine synthase. cf. EC 2.8.5.1, S-sulfo-L-cysteine synthase (3-phospho-L-serine-dependent).
History
created 2018
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1 Oxidoreductases
1.1 Acting on the CH-OH group of donors
1.14.14.2 created 1972, deleted 1976 1.14.14.4 created 2000, deleted 2002
