1fp6

X-ray diffraction
2.15Å resolution

THE NITROGENASE FE PROTEIN FROM AZOTOBACTER VINELANDII COMPLEXED WITH MGADP

Released:

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:
homo dimer (preferred)
PDBe Complex ID:
PDB-CPX-132539 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Nitrogenase iron protein 1 Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 289 amino acids
Theoretical weight: 31.42 KDa
Source organism: Azotobacter vinelandii
Expression system: Escherichia coli
UniProt:
  • Canonical: P00459 (Residues: 2-290; Coverage: 100%)
Gene name: nifH1
Sequence domains: 4Fe-4S iron sulfur cluster binding proteins, NifH/frxC family
Structure domains: P-loop containing nucleotide triphosphate hydrolases

Ligands and Environments

3 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL9-1
Spacegroup: P212121
Unit cell:
a: 93.25Å b: 119.53Å c: 120.94Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.2 0.2 0.268
Expression system: Escherichia coli