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EC 1.8.98.3 Details

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EC number

1.8.98.3

Accepted name

sulfite reductase (coenzyme F₄₂₀)

Reaction

hydrogen sulfide + 3 oxidized coenzyme F₄₂₀ + 3 H₂O = sulfite + 3 reduced coenzyme F₄₂₀

Other name(s)

coenzyme F₄₂₀-dependent sulfite reductase, Fsr

Systematic name

hydrogen sulfide:coenzyme F₄₂₀ oxidoreductase

Comment

The enzyme, isolated from the archaeon Methanocaldococcus jannaschii, is involved in sulfite detoxification and assimilation.

History

created 2014

EC Tree

1 Oxidoreductases

1.1 Acting on the CH-OH group of donors

1.1.1 With NAD⁺ or NADP⁺ as acceptor

1.1.2 With a cytochrome as acceptor

1.1.3 With oxygen as acceptor

1.1.4 With a disulfide as acceptor

1.1.5 With a quinone or similar compound as acceptor

1.1.7 With an iron-sulfur protein as acceptor

1.1.9 With a copper protein as acceptor

1.1.98 With other, known, physiological acceptors

1.1.99 With unknown physiological acceptors

1.2 Acting on the aldehyde or oxo group of donors

1.3 Acting on the CH-CH group of donors

1.4 Acting on the CH-NH₂ group of donors

1.5 Acting on the CH-NH group of donors

1.6 Acting on NADH or NADPH

1.6.1 With NAD⁺ or NADP⁺ as acceptor

1.6.2 With a heme protein as acceptor

1.6.3 With oxygen as acceptor

1.6.4 With a disulfide as acceptor (deleted sub-subclass)

1.6.5 With a quinone or similar compound as acceptor

1.6.6 With a nitrogenous group as acceptor

1.6.6.1 created 1961, deleted 2002

1.6.6.2 created 1961, deleted 2002

1.6.6.3 created 1961, deleted 2002

1.6.6.4 created 1961, deleted 2002

1.6.6.5 created 1961, deleted 1964

1.6.6.6 created 1961, deleted 2002

1.6.6.7 created 1961, deleted 2002

1.6.6.8 created 1965, deleted 2002

1.6.6.9 trimethylamine-N-oxide reductase

1.6.6.10 created 1972, deleted 2002

1.6.6.11 created 1972, deleted 2002

1.6.6.12 created 1989, deleted 2002

1.6.6.13 created 1989, deleted 2002

1.6.7 With an iron-sulfur protein as acceptor (deleted sub-subclass)

1.6.8 With a flavin as acceptor (deleted sub-subclass)

1.6.99 With unknown physiological acceptors

1.7 Acting on other nitrogenous compounds as donors

1.8 Acting on a sulfur group of donors

1.8.1 With NAD⁺ or NADP⁺ as acceptor

1.8.2 With a cytochrome as acceptor

1.8.3 With oxygen as acceptor

1.8.4 With a disulfide as acceptor

1.8.5 With a quinone or similar compound as acceptor

1.8.6 With a nitrogenous group as acceptor (deleted sub-subclass)

1.8.7 With an iron-sulfur protein as acceptor

1.8.98 With other, known, physiological acceptors

1.8.98.1 dihydromethanophenazine:CoB-CoM heterodisulfide reductase

1.8.98.2 sulfiredoxin

1.8.98.3 sulfite reductase (coenzyme F₄₂₀)

1.8.98.4 coenzyme F₄₂₀:CoB-CoM heterodisulfide,ferredoxin reductase

1.8.98.5 H₂:CoB-CoM heterodisulfide,ferredoxin reductase

1.8.98.6 formate:CoB-CoM heterodisulfide,ferredoxin reductase

1.8.98.7 cysteine-type anaerobic sulfatase-maturating enzyme

1.8.99 With unknown physiological acceptors

1.9 Acting on a heme group of donors

1.10 Acting on diphenols and related substances as donors

1.11 Acting on a peroxide as acceptor

1.12 Acting on hydrogen as donor

1.13 Acting on single donors with incorporation of molecular oxygen (oxygenases)

1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen

1.15 Acting on superoxide as acceptor

1.16 Oxidizing metal ions

1.17 Acting on CH or CH₂ groups

1.18 Acting on iron-sulfur proteins as donors

1.19 Acting on reduced flavodoxin as donor

1.20 Acting on phosphorus or arsenic in donors

1.21 Catalysing the reaction X-H + Y-H = X-Y

1.21.1 With NAD⁺ or NADP⁺ as acceptor

1.21.3 With oxygen as acceptor

1.21.4 With a disulfide as acceptor

1.21.98 With other, known, physiological acceptors

1.21.99 With unknown physiological acceptors

1.22 Acting on halogen in donors

1.23 Reducing C-O-C group as acceptor

1.97 Other oxidoreductases

1.98 Enzymes using H₂ as reductant (deleted subclass)

1.99 Other enzymes using O₂ as oxidant (deleted subclass)

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Release 2023.1 (January 2023)