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EC 2.8.5.2 Details
show Brenda entryEC number
2.8.5.2
Accepted name
L-cysteine S-thiosulfotransferase
Reaction
(1) [SoxY protein]-L-cysteine + thiosulfate + 2 ferricytochrome c = [SoxY protein]-S-sulfosulfanyl-L-cysteine + 2 ferrocytochrome c + 2 H+;;(2) [SoxY protein]-S-sulfanyl-L-cysteine + thiosulfate + 2 ferricytochrome c = [SoxY protein]-S-(2-sulfodisulfanyl)-L-cysteine + 2 ferrocytochrome c + 2 H+
Other name(s)
SoxXA,
thiosulfate:[SoxY protein]-L-cysteine thiosulfotransferase
Systematic name
thiosulfate:[SoxY protein]-L-cysteine thiosulfonotransferase
Comment
The enzyme is part of the Sox enzyme system, which participates in a bacterial thiosulfate oxidation pathway that produces sulfate. It catalyses two reactions in the pathway - early in the pathway it attaches a thiosulfate molecule to the sulfur atom of an L-cysteine of a SoxY protein; later it transfers a second thiosulfate molecule to a sulfane group that is already attached to the same cysteine residue.
History
created 2018
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1 Oxidoreductases
2 Transferases
2.8.5.1 S-sulfo-L-cysteine synthase (3-phospho-L-serine-dependent)
