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ENZYME entry: EC 1.7.2.1
| Accepted Name |
|---|
| nitrite reductase (NO-forming).
|
| Alternative Name(s) |
|---|
| cd-cytochrome nitrite reductase. |
| cytochrome c-551:O2, NO2(+) oxidoreductase. |
| cytochrome cd. |
| cytochrome cd1. |
| hydroxylamine (acceptor) reductase. |
| methyl viologen-nitrite reductase. |
| nitrite reductase. |
| nitrite reductase (cytochrome; NO-forming). |
| nitrite reductase (cytochrome). |
| Pseudomonas cytochrome oxidase. |
| Reaction catalysed |
|---|
| Fe(III)-[cytochrome c] + H2O + nitric oxide <=> Fe(II)-[cytochrome c] + 2 H(+) + nitrite |
| Comment(s) |
|---|
- The reaction is catalyzed by two types of enzymes, found in the
perimplasm of denitrifying bacteria.
- One type comprises proteins containing multiple copper centers,
the other a heme protein, cytochrome cd1.
- Acceptors include c-type cytochromes such as cytochrome c-550 or
cytochrome c-551 from Paracoccus denitrificans or Pseudomonas
aeruginosa, and small blue copper proteins such as azurin and
pseudoazurin.
- Cytochrome cd1 also has oxidase and hydroxylamine reductase
activities.
- May also catalyze the reaction of EC 1.7.99.1 since this is a well-
known activity of cytochrome cd1.
- Formerly EC 1.6.6.5, EC 1.7.99.3 and EC 1.9.3.2.
|
| Cross-references |
|---|
| BRENDA | 1.7.2.1 |
| EC2PDB | 1.7.2.1 |
| ExplorEnz | 1.7.2.1 |
| PRIAM enzyme-specific profiles | 1.7.2.1 |
| KEGG Ligand Database for Enzyme Nomenclature | 1.7.2.1 |
| IUBMB Enzyme Nomenclature | 1.7.2.1 |
| IntEnz | 1.7.2.1 |
| MEDLINE | Find literature relating to 1.7.2.1 |
| MetaCyc | 1.7.2.1 |
| Rhea expert-curated reactions | 1.7.2.1 |
| UniProtKB/Swiss-Prot |
| Q02219, ANIA_NEIGO; | Q9JTB8, ANIA_NEIMA; | Q9JYE1, ANIA_NEIMB; |
| Q92Z29, NIRK_RHIME; | Q51700, NIRS_PARDP; | P72181, NIRS_PARPN; |
| P24474, NIRS_PSEAE; | P24040, NIRS_PSEST; | P25006, NIR_ACHCY; |
| P38501, NIR_ALCFA; | P81445, NIR_ALCXX; | Q53239, NIR_CERS5; |
| Q01537, NIR_NEOGA; | Q06006, NIR_PSECL; | Q60214, NIR_RHISU; |
| P0DV45, NRHAO_KUEST; |
|
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ENZYME /
UniProtKB/Swiss-Prot entries corresponding to 1.7.2.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 1.7.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 1.-.-.-