PDBe 1rzq

X-ray diffraction
2.2Å resolution

Crystal Structure of C-Terminal Despentapeptide Nitrite Reductase from Achromobacter Cycloclastes at pH5.0


Function and Biology Details

Reaction catalysed:
Nitric oxide + H(2)O + ferricytochrome c = nitrite + ferrocytochrome c + 2 H(+)
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
homo trimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Copper-containing nitrite reductase Chains: A, B, C
Molecule details ›
Chains: A, B, C
Length: 335 amino acids
Theoretical weight: 36.54 KDa
Source organism: Achromobacter cycloclastes
Expression system: Escherichia coli
  • Canonical: P25006 (Residues: 39-373; Coverage: 99%)
Gene name: nirK
Sequence domains:
Structure domains: Cupredoxins - blue copper proteins

Ligands and Environments

3 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: CONVENTIONAL Cu
Spacegroup: P212121
Unit cell:
a: 99.02Å b: 117.44Å c: 122.8Å
α: 90° β: 90° γ: 90°
R R work R free
0.181 0.181 0.208
Expression system: Escherichia coli