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
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1.8.99.5
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sulfate-reducing
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desulfovibrio
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thiosulfate
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sulfur-oxidizing
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biogeochemical
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desulfobacteraceae
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geochemical
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vinosum
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desulfotomaculum
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allochromatium
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phylotypes
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adenosine-5'-phosphosulfate
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desulfoviridin
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desulfobulbus
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desulfosarcina
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hildenborough
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desulfobulbaceae
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chemotrophic
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desulfovibrionaceae
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low-sulfate
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sulfidogenic
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aarhus
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deltaproteobacterial
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chlorobaculum
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methane-oxidizing
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hydrogenotrophic
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desulfobacterium
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desulfomicrobium
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sirohaem
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desulfococcus
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t-rflp
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desulfosporosinus
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anme-2
- 1.8.99.5
-
sulfate-reducing
- desulfovibrio
- thiosulfate
-
sulfur-oxidizing
-
biogeochemical
- desulfobacteraceae
-
geochemical
- vinosum
- desulfotomaculum
- allochromatium
-
phylotypes
- adenosine-5'-phosphosulfate
-
desulfoviridin
- desulfobulbus
- desulfosarcina
- hildenborough
- desulfobulbaceae
-
chemotrophic
- desulfovibrionaceae
-
low-sulfate
-
sulfidogenic
-
aarhus
-
deltaproteobacterial
- chlorobaculum
-
methane-oxidizing
-
hydrogenotrophic
- desulfobacterium
- desulfomicrobium
-
sirohaem
- desulfococcus
-
t-rflp
- desulfosporosinus
-
anme-2
Reaction
+ 2 acceptor + 3 H2O = + + 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
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Systematic Name
Systematic Name on EC 1.8.99.5 - dissimilatory sulfite reductase
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hydrogen-sulfide:[DsrC sulfur-carrier protein],acceptor oxidoreductase
Contain siroheme. The enzyme is essential in prokaryotic sulfur-based energy metabolism, including sulfate/sulfite reducing organisms, sulfur-oxidizing bacteria, and organosulfonate reducers. In sulfur reducers it catalyses the reduction of sulfite to sulfide (reaction 1 in the right to left direction), while in sulfur oxidizers it catalyses the opposite reaction (reaction 2 in the left to right direction) [1]. The reaction involves the small protein DsrC, which is present in all the organisms that contain dissimilatory sulfite reductase. During the process an intramolecular disulfide bond is formed between two L-cysteine residues of DsrC. This disulfide can be reduced by a number of proteins including DsrK and TcmB [5]. This enzyme is different from EC 1.8.1.2, assimilatory sulfite reductase (NADPH), and EC 1.8.7.1, assimilatory sulfite reductase (ferredoxin), which are involved in sulfate assimilation.