B6db activities : 2_5_1

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	2.5.1.144
Description	S-sulfo-L-cysteine synthase (O-acetyl-L-serine-dependent)
Alternative names	CS26 (gene name).
Catalyzed reaction	O3-acetyl-L-serine + thiosulfate = S-sulfo-L-cysteine + acetate.
Cofactor	Pyridoxal-phosphate.
Comments	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).
Organisms	-Plants
Family	2.5.1.144 (0)

Links	Enzyme (activities) 2.5.1.144 BRENDA (activities) 2.5.1.144 KEGG (pathways) 2.5.1.144 PLPMDB (PLP mutants) 2.5.1.144

References	Bermúdez MA, Páez-Ochoa MA, Gotor C, Romero LC. (2010) Arabidopsis S-sulfocysteine synthase activity is essential for chloroplast function and long-day light-dependent redox control Plant Cell 22 403-16. Articles on 2.5.1.144

last changed	2018/06/04 11:15

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