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ENZYME entry: EC 3.1.6.20

Accepted Name
S-sulfosulfanyl-L-cysteine sulfohydrolase.
Reaction catalysed
  • [SoxY protein]-S-sulfosulfanyl-L-cysteine + H(2)O <=> [SoxY protein]-S-sulfanyl-L-cysteine + sulfate
  • [SoxY protein]-S-(2-sulfodisulfanyl)-L-cysteine + H(2)O <=> [SoxY protein]-S-disulfanyl-L-cysteine + sulfate
Cofactor(s)
Mn(2+).
Comment(s)
  • The enzyme is part of the Sox enzyme system, which participates in a bacterial thiosulfate oxidation pathway that produces sulfate.
  • It catalyzes two reactions in the pathway.
  • In both cases the enzyme hydrolyzes a sulfonate moiety that is bound (either directly or via a sulfane) to a cysteine residue of a SoxY protein, releasing sulfate.
  • The enzyme from Paracoccus pantotrophus contains a pyroglutamate (cycloglutamate) at its N-terminus.
Cross-references
BRENDA3.1.6.20
EC2PDB3.1.6.20
ExplorEnz3.1.6.20
PRIAM enzyme-specific profiles3.1.6.20
KEGG Ligand Database for Enzyme Nomenclature3.1.6.20
IUBMB Enzyme Nomenclature3.1.6.20
IntEnz3.1.6.20
MEDLINEFind literature relating to 3.1.6.20
MetaCyc3.1.6.20

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 3.1.6.-
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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 3.-.-.-