CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
2 | Mainly Beta |
|
2.60 | Sandwich |
|
2.60.40 | Immunoglobulin-like |
|
2.60.40.420 | Cupredoxins - blue copper proteins |
Domain Context
CATH Clusters
| Superfamily | Cupredoxins - blue copper proteins |
| Functional Family |
Enzyme Information
| 1.7.2.1 |
Nitrite reductase (NO-forming).
based on mapping to UniProt Q53239
Nitric oxide + H(2)O + ferricytochrome c = nitrite + ferrocytochrome c + 2 H(+).
-!- 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.
|
UniProtKB Entries (1)
| Q53239 |
NIR_RHOS5
Rhodobacter sphaeroides ATCC 17025
Copper-containing nitrite reductase
|
PDB Structure
| PDB | 1MZY |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | Escherichia |
| Primary Citation |
The High resolution Crystal Structures of Nitrite Reductase and its mutant Met182Thr from Rhodobacter Sphaeroides Reveal a Gating Mechanism for the Electron Transfer to the Type 1 Copper Center
To be Published
|
