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1.8.99.5: dissimilatory sulfite reductase

This is an abbreviated version!
For detailed information about dissimilatory sulfite reductase, go to the full flat file.

Word Map on EC 1.8.99.5

Reaction

a [DsrC protein]-S-sulfanyl-L-cysteine
+ 2 acceptor + 3 H2O =
sulfite
 +
a [DsrC protein]-dithiol
 + 2 reduced acceptor + 2 H+

Synonyms

CNL05500, dSiR, DsrA, DsrAB, DsrC, DsvA, DsvB, hydrogen-sulfide:(acceptor) oxidoreductase, MET5, octahaemcytochrome c MccA, PAE2566, SiRA, siroheme sulfite reductase, sulfite reductase

ECTree

     1 Oxidoreductases
         1.8 Acting on a sulfur group of donors
             1.8.99 With unknown physiological acceptors
                1.8.99.5 dissimilatory sulfite reductase

Natural Substrates Products

Natural Substrates Products on EC 1.8.99.5 - dissimilatory sulfite reductase

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NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
hydrogen sulfide + a [DsrC protein]-disulfide + acceptor + H2O
sulfite + a [DsrC protein]-dithiol + reduced acceptor + H+
show the reaction diagram
sulfite + 6 ferrocytochrome c + 6 H+
sulfide + 6 ferricytochrome c + 3 H2O
show the reaction diagram
overall transfer of 6 electrons during the reaction
-
-
?
additional information
?
-
multiheme cytochrome c enzymes catalyse complex-multi-electron redox reactions and bind their substrates through the free electron pairs of a heteroatom to a free coordination position at an active-site hem group. Electrons are then provided or accepted by the tightly coupled chain of heme groups
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?