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Literature summary for 1.18.6.1 extracted from

  • Duyvis, M.G.; Wassink, H.; Haaker, H.
    Pre-steady-state MgATP-dependent proton production and electron transfer by nitrogenase from Azotobacter vinelandii (1994), Eur. J. Biochem., 225, 881-890.
    View publication on PubMed
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Metals/Ions

Metals/Ions Comment Organism Structure
Iron
-
 Azotobacter vinelandii
Mg2+ Mg2+ required for MgATP complex Azotobacter vinelandii
Molybdenum
-
 Azotobacter vinelandii

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O Azotobacter vinelandii
-
 8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
 ?

Organism

Organism UniProt Comment Textmining
Azotobacter vinelandii
-
-
-

Reaction

Reaction Comment Organism Reaction ID
4 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O = 4 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate MgATP/MgADP-dependent electron and proton transfer kinetics Azotobacter vinelandii
a
4 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O = 4 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate enzyme is composed of 2 metalloproteins: component I MoFe protein and component II Fe protein Azotobacter vinelandii
a

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O
-
 Azotobacter vinelandii 8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
 ?
8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O MgATP-dependent Azotobacter vinelandii 8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
 ?
dithionite + H+ + N2 + ATP in vitro substrate Azotobacter vinelandii ?
-
 ?

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
additional information
-
 additional information 1200 per min: proton production of the reduced enzyme, MgATP-dependent Azotobacter vinelandii