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ENZYME

ENZYME entry: EC 1.8.5.4

PURL: https://purl.expasy.org/enzyme/EC/1.8.5.4
Accepted Name
bacterial sulfide:quinone reductase
Alternative Name(s)
sulfide:quinone reductase
Reaction catalysed
n a quinone + n hydrogen sulfide + n H(+) = polysulfur(n-2) + n a quinol
Comment(s)
  • Ubiquinone, plastoquinone or menaquinone can act as acceptor in different species.
  • This enzyme catalyzes the formation of sulfur globules.
  • It repeats the catalytic cycle without releasing the product, producing a polysulfide of up to 10 sulfur atoms.
  • The reaction stops when the maximum length of the polysulfide that can be accommodated in the sulfide oxidation pocket is achieved.
  • The enzyme also plays an important role in anoxygenic bacterial photosynthesis. cf. EC 1.8.5.8.
Cross-references
BRENDA1.8.5.4
EC2PDB1.8.5.4
ExplorEnz1.8.5.4
KEGG Ligand Database for Enzyme Nomenclature1.8.5.4
IUBMB Enzyme Nomenclature1.8.5.4
MEDLINEFind literature relating to 1.8.5.4
MetaCyc1.8.5.4
Rhea expert-curated reactions1.8.5.4
UniProtKB/Swiss-Prot
Q7ZAG8, SQRD_ACIAMB7JBP8, SQRD_ACIF2O67931, SQRD_AQUAE

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 1.8.5.-
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