IUBMB Enzyme Nomenclature


Accepted name: sulfite reductase

Reaction: hydrogen sulfide + acceptor + 3 H2O = sulfite + reduced acceptor

Other name(s): assimilatory sulfite reductase; assimilatory-type sulfite reductase; hydrogen-sulfide:(acceptor) oxidoreductase

Systematic name: hydrogen-sulfide:acceptor oxidoreductase

Comments: An iron-protein. A stoichiometry of six molecules of reduced methyl viologen per molecule of sulfide formed was found.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 37256-51-2


1. Asada, K. Purification and properties of a sulfite reductase from leaf tissue. J. Biol. Chem. 242 (1967) 3646-3654. [PMID: 6038492]

2. Asada, K., Tamura, G. and Bandurski, R.S. Methyl viologen-linked sulfite reductase from spinach leaves. J. Biol. Chem. 244 (1969) 4904-4915. [PMID: 5824566]

3. Yoshimoto, A., Nakamura, T. and Sato, R. Isolation from Aspergillus nidulans, of a protein catalyzing the reduction of sulfite by reduced viologen dyes. J. Biochem. (Tokyo) 62 (1967) 756-766. [PMID: 5589532]

[EC created 1972]

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