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| Parent Class: | EC-Numbers → 2 -- Transferases → 2.5 -- Transferring alkyl or aryl groups, other than methyl groups → 2.5.1 -- Transferring alkyl or aryl groups, other than methyl groups |
Synonyms: cysteine synthase B, cysM (gene name), CS26 (gene name)
Systematic Name: O-acetyl-L-serine:thiosulfate 2-amino-2-carboxyethyltransferase
Unification Links: BRENDA:2.5.1.144, ENZYME:2.5.1.144, IUBMB-ExplorEnz:2.5.1.144
Reaction:
O-acetyl-L-serine + thiosulfate ↔ S-sulfo-L-cysteine + acetate + H+
Enzymes and Genes:
cysteine synthase B:
cysM (
Escherichia coli K-12 substr. MG1655
)
S-sulfocysteine synthase:
CS26 (
Arabidopsis thaliana
)
Summary:
In plants, the activity is catalyzed 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).
Citations: [Hensel83a, Nakamura84, Saito93, Bermudez12, Gotor13]
References
Report Errors or Provide Feedback
Please cite the following article in publications resulting from the use of MetaCyc: Caspi et al, Nucleic Acids Research 46(D1):D633-D639 2018
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