ExplorEnz: EC 1.8.1.18

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1.8.1.18

Accepted name:

NAD(P)H sulfur oxidoreductase (CoA-dependent)

Reaction:

hydrogen sulfide + NAD(P)⁺ = sulfur + NAD(P)H + H⁺

Other name(s):

NADPH NSR; S⁰ reductase; coenzyme A-dependent NADPH sulfur oxidoreductase

Systematic name:

hydrogen sulfide:NAD(P)⁺ oxidoreductase (CoA-dependent)

Comments:

This FAD-dependent enzyme, characterized from the archaeon Pyrococcus furiosus, is responsible for NAD(P)H-linked sulfur reduction. The activity with NADH is about half of that with NADPH. The reaction is dependent on CoA, although the nature of this dependency is not well understood.

Links to other databases:

BRENDA, EXPASY, KEGG, MetaCyc

References:

1.	Schut, G.J., Bridger, S.L. and Adams, M.W. Insights into the metabolism of elemental sulfur by the hyperthermophilic archaeon Pyrococcus furiosus: characterization of a coenzyme A- dependent NAD(P)H sulfur oxidoreductase. J. Bacteriol. 189 (2007) 4431–4441. [DOI] [PMID: 17449625]
2.	Bridger, S.L., Clarkson, S.M., Stirrett, K., DeBarry, M.B., Lipscomb, G.L., Schut, G.J., Westpheling, J., Scott, R.A. and Adams, M.W. Deletion strains reveal metabolic roles for key elemental sulfur-responsive proteins in Pyrococcus furiosus. J. Bacteriol. 193 (2011) 6498–6504. [DOI] [PMID: 21965560]
3.	Harris, D.R., Ward, D.E., Feasel, J.M., Lancaster, K.M., Murphy, R.D., Mallet, T.C. and Crane, E.J., 3rd. Discovery and characterization of a coenzyme A disulfide reductase from Pyrococcus horikoshii. Implications for this disulfide metabolism of anaerobic hyperthermophiles. FEBS J. 272 (2005) 1189–1200. [DOI] [PMID: 15720393]

[EC 1.8.1.18 created 2013]