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UniProt functional annotation for Q50925 | ||
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| UniProt code: Q50925. |
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| Organism: | |
Nitrosomonas europaea (strain ATCC 19718 / CIP 103999 / KCTC 2705 / NBRC 14298). |
| Taxonomy: | |
Bacteria; Proteobacteria; Betaproteobacteria; Nitrosomonadales; Nitrosomonadaceae; Nitrosomonas. |
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| Function: | |
Catalyzes the oxidation of hydroxylamine to nitrite. The electrons released in the reaction are partitioned to ammonium monooxygenase and to the respiratory chain. The immediate acceptor of electrons from HAO is cytochrome c-554. {ECO:0000269|PubMed:6289867}. |
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| Catalytic activity: | |
Reaction=4 [Fe(III)cytochrome c] + H2O + hydroxylamine = 4 [Fe(II)cytochrome c] + 5 H(+) + nitrite; Xref=Rhea:RHEA:45032, Rhea:RHEA-COMP:10350, Rhea:RHEA-COMP:14399, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15429, ChEBI:CHEBI:16301, ChEBI:CHEBI:29033, ChEBI:CHEBI:29034; EC=1.7.2.6; Evidence={ECO:0000269|PubMed:6289867}; |
| Catalytic activity: | |
Reaction=3 [Fe(III)cytochrome c] + hydroxylamine = 3 [Fe(II)cytochrome c] + 3 H(+) + nitric oxide; Xref=Rhea:RHEA:45036, Rhea:RHEA- COMP:10350, Rhea:RHEA-COMP:14399, ChEBI:CHEBI:15378, ChEBI:CHEBI:15429, ChEBI:CHEBI:16480, ChEBI:CHEBI:29033, ChEBI:CHEBI:29034; EC=1.7.2.6; Evidence={ECO:0000269|PubMed:6289867}; |
| Cofactor: | |
Name=heme c; Xref=ChEBI:CHEBI:61717; Evidence={ECO:0000269|PubMed:6289867}; Note=Binds 8 heme c groups per subunit. One specific heme c group is called heme P460. {ECO:0000269|PubMed:6289867}; |
| Subunit: | |
Homotrimer. |
| Subcellular location: | |
Periplasm. |
| Ptm: | |
Binds 8 heme groups per subunit. |
Annotations taken from UniProtKB at the EBI.