Function and Biology

Selenium-incorporated nitrogenase Fe protein (Av2-Se) from A. vinelandii (22 mM KSeCN)

Source organism: Azotobacter vinelandii
Biochemical function: 4 iron, 4 sulfur cluster binding
Biological process: nitrogen fixation
Cellular component: not assigned

EC 1.18.6.1: Nitrogenase

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
Systematic name:
Ferredoxin:dinitrogen oxidoreductase (ATP-hydrolyzing, molybdenum-dependent)
Alternative Name(s):
  • Reduced ferredoxin:dinitrogen oxidoreductase (ATP-hydrolyzing)

Sequence family

Pfam Protein family (Pfam)
PF00142
Domain description: 4Fe-4S iron sulfur cluster binding proteins, NifH/frxC family
Occurring in:
  1. Nitrogenase iron protein 1
The deposited structure of PDB entry 7tqf contains 1 copy of Pfam domain PF00142 (4Fe-4S iron sulfur cluster binding proteins, NifH/frxC family) in Nitrogenase iron protein 1. Showing 1 copy in chain A.

InterPro InterPro annotations
IPR000392
Domain description: NifH/frxC family
Occurring in:
  1. Nitrogenase iron protein 1
IPR030655
Domain description: NifH/chlL conserved site
Occurring in:
  1. Nitrogenase iron protein 1
IPR005977
Domain description: Nitrogenase iron protein NifH
Occurring in:
  1. Nitrogenase iron protein 1
IPR027417
Domain description: P-loop containing nucleoside triphosphate hydrolase
Occurring in:
  1. Nitrogenase iron protein 1