X-ray diffraction
1.16Å resolution

Nitrogenase MoFe protein from Azotobacter vinelandii


Function and Biology Details

Reaction catalysed:
8 reduced ferredoxin + 8 H(+) + N(2) + 16 ATP + 16 H(2)O = 8 oxidized ferredoxin + H(2) + 2 NH(3) + 16 ADP + 16 phosphate
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Nitrogenase molybdenum-iron protein alpha chain Chains: A, C, E, G
Molecule details ›
Chains: A, C, E, G
Length: 491 amino acids
Theoretical weight: 55.23 KDa
Source organism: Azotobacter vinelandii
  • Canonical: P07328 (Residues: 2-492; Coverage: 100%)
Gene name: nifD
Sequence domains: Nitrogenase component 1 type Oxidoreductase
Structure domains: Nitrogenase molybdenum iron protein domain
Nitrogenase molybdenum-iron protein beta chain Chains: B, D, F, H
Molecule details ›
Chains: B, D, F, H
Length: 522 amino acids
Theoretical weight: 59.4 KDa
Source organism: Azotobacter vinelandii
  • Canonical: P07329 (Residues: 2-523; Coverage: 100%)
Gene name: nifK
Sequence domains:
Structure domains:

Ligands and Environments

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL9-2
Spacegroup: P21
Unit cell:
a: 108.31Å b: 131.63Å c: 159.159Å
α: 90° β: 108.37° γ: 90°
R R work R free
0.123 0.123 0.149