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Literature summary extracted from

  • Eady, R.R.
    Isolation and characterization of various nitrogenases (1980), Methods Enzymol., 69, 753-778.
No PubMed abstract available

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
1.18.6.1 Iron
-
Paenibacillus polymyxa
1.18.6.1 Iron
-
Rhodospirillum rubrum
1.18.6.1 Iron
-
Bradyrhizobium lupini
1.18.6.1 Iron
-
Azotobacter chroococcum
1.18.6.1 Iron 17-19 atoms of iron per molecule of MoFe protein, overview Bradyrhizobium japonicum
1.18.6.1 Iron 17-19 atoms of iron per molecule of MoFe protein, overview Klebsiella pneumoniae
1.18.6.1 Iron 17-19 atoms of iron per molecule of MoFe protein, overview Clostridium pasteurianum
1.18.6.1 Iron 17-19 atoms of iron per molecule of MoFe protein, overview Azotobacter vinelandii
1.18.6.1 Iron 17-19 atoms of iron per molecule of MoFe protein, overview Allochromatium vinosum
1.18.6.1 Molybdenum 1-2 gatom per mol of MoFe protein , overview Bradyrhizobium japonicum
1.18.6.1 Molybdenum 1-2 gatom per mol of MoFe protein , overview Klebsiella pneumoniae
1.18.6.1 Molybdenum 1-2 gatom per mol of MoFe protein , overview Clostridium pasteurianum
1.18.6.1 Molybdenum 1-2 gatom per mol of MoFe protein , overview Azotobacter vinelandii
1.18.6.1 Molybdenum 1-2 gatom per mol of MoFe protein , overview Paenibacillus polymyxa
1.18.6.1 Molybdenum 1-2 gatom per mol of MoFe protein , overview Rhodospirillum rubrum
1.18.6.1 Molybdenum 1-2 gatom per mol of MoFe protein , overview Allochromatium vinosum
1.18.6.1 Molybdenum 1-2 gatom per mol of MoFe protein , overview Bradyrhizobium lupini
1.18.6.1 Molybdenum 1-2 gatom per mol of MoFe protein , overview Azotobacter chroococcum

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
1.18.6.1 40000 74000 Fe protein: various methods, overview Bradyrhizobium japonicum
1.18.6.1 40000 74000 Fe protein: various methods, overview Klebsiella pneumoniae
1.18.6.1 40000 74000 Fe protein: various methods, overview Clostridium pasteurianum
1.18.6.1 40000 74000 Fe protein: various methods, overview Azotobacter vinelandii
1.18.6.1 40000 74000 Fe protein: various methods, overview Bradyrhizobium lupini
1.18.6.1 160000 270000 MoFe protein: various methods, overview Bradyrhizobium japonicum
1.18.6.1 160000 270000 MoFe protein: various methods, overview Klebsiella pneumoniae
1.18.6.1 160000 270000 MoFe protein: various methods, overview Clostridium pasteurianum
1.18.6.1 160000 270000 MoFe protein: various methods, overview Azotobacter vinelandii
1.18.6.1 160000 270000 MoFe protein: various methods, overview Allochromatium vinosum
1.18.6.1 160000 270000 MoFe protein: various methods, overview Bradyrhizobium lupini
1.18.6.1 160000 270000 MoFe protein: various methods, overview Azotobacter chroococcum
1.18.6.1 168000
-
MoFe protein, ultracentrifugation Clostridium pasteurianum
1.18.6.1 180000
-
MoFe protein, gel filtration Bradyrhizobium japonicum
1.18.6.1 194000
-
MoFe protein, gel filtration Bradyrhizobium lupini
1.18.6.1 200000
-
-
Bradyrhizobium japonicum
1.18.6.1 200000
-
-
Klebsiella pneumoniae
1.18.6.1 200000
-
MoFe protein, gel filtration Clostridium pasteurianum
1.18.6.1 216000
-
MoFe protein, gel filtration Azotobacter vinelandii
1.18.6.1 226000
-
MoFe protein, gel filtration Klebsiella pneumoniae
1.18.6.1 270000
-
MoFe protein, ultracentrifugation Azotobacter vinelandii

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O Bradyrhizobium japonicum
-
8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O Klebsiella pneumoniae
-
8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O Clostridium pasteurianum
-
8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O Azotobacter vinelandii
-
8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O Paenibacillus polymyxa
-
8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O Rhodospirillum rubrum
-
8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O Allochromatium vinosum
-
8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O Bradyrhizobium lupini
-
8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O Azotobacter chroococcum
-
8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?

Organism

EC Number Organism UniProt Comment Textmining
1.18.6.1 Allochromatium vinosum
-
-
-
1.18.6.1 Azotobacter chroococcum
-
-
-
1.18.6.1 Azotobacter vinelandii
-
-
-
1.18.6.1 Bradyrhizobium japonicum
-
-
-
1.18.6.1 Bradyrhizobium lupini
-
-
-
1.18.6.1 Clostridium pasteurianum
-
-
-
1.18.6.1 Klebsiella pneumoniae
-
-
-
1.18.6.1 Paenibacillus polymyxa
-
-
-
1.18.6.1 Rhodospirillum rubrum
-
-
-

Oxidation Stability

EC Number Oxidation Stability Organism
1.18.6.1 extreme sensitivity to O2 Bradyrhizobium japonicum
1.18.6.1 extreme sensitivity to O2 Klebsiella pneumoniae
1.18.6.1 extreme sensitivity to O2 Clostridium pasteurianum
1.18.6.1 extreme sensitivity to O2 Azotobacter vinelandii
1.18.6.1 extreme sensitivity to O2 Paenibacillus polymyxa
1.18.6.1 extreme sensitivity to O2 Rhodospirillum rubrum
1.18.6.1 extreme sensitivity to O2 Allochromatium vinosum
1.18.6.1 extreme sensitivity to O2 Bradyrhizobium lupini
1.18.6.1 extreme sensitivity to O2 Azotobacter chroococcum
1.18.6.1 t1/2 Fe protein: 45 sec, t1/2 MoFe protein: 10 min Bradyrhizobium japonicum
1.18.6.1 t1/2 Fe protein: 45 sec, t1/2 MoFe protein: 10 min Klebsiella pneumoniae
1.18.6.1 t1/2 Fe protein: 45 sec, t1/2 MoFe protein: 10 min Azotobacter vinelandii
1.18.6.1 t1/2 Fe protein: 45 sec, t1/2 MoFe protein: 10 min Rhodospirillum rubrum
1.18.6.1 t1/2 Fe protein: 45 sec, t1/2 MoFe protein: 10 min Allochromatium vinosum
1.18.6.1 t1/2 Fe protein: 45 sec, t1/2 MoFe protein: 10 min Bradyrhizobium lupini
1.18.6.1 t1/2 Fe protein: 45 sec, t1/2 MoFe protein: 10 min Azotobacter chroococcum

Purification (Commentary)

EC Number Purification (Comment) Organism
1.18.6.1
-
Klebsiella pneumoniae
1.18.6.1
-
Clostridium pasteurianum
1.18.6.1
-
Azotobacter vinelandii
1.18.6.1
-
Allochromatium vinosum
1.18.6.1
-
Azotobacter chroococcum

Reaction

EC Number Reaction Comment Organism Reaction ID
1.18.6.1 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 Bradyrhizobium japonicum
1.18.6.1 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 Klebsiella pneumoniae
1.18.6.1 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 Clostridium pasteurianum
1.18.6.1 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
1.18.6.1 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 Paenibacillus polymyxa
1.18.6.1 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 Rhodospirillum rubrum
1.18.6.1 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 Allochromatium vinosum
1.18.6.1 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 Bradyrhizobium lupini
1.18.6.1 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 chroococcum

Source Tissue

EC Number Source Tissue Comment Organism Textmining
1.18.6.1 root nodule bacteroid Bradyrhizobium japonicum
-
1.18.6.1 root nodule bacteroid Klebsiella pneumoniae
-
1.18.6.1 root nodule bacteroid Clostridium pasteurianum
-
1.18.6.1 root nodule bacteroid Azotobacter vinelandii
-
1.18.6.1 root nodule bacteroid Allochromatium vinosum
-
1.18.6.1 root nodule bacteroid Bradyrhizobium lupini
-
1.18.6.1 root nodule bacteroid Azotobacter chroococcum
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
1.18.6.1 additional information
-
-
Bradyrhizobium japonicum
1.18.6.1 additional information
-
-
Paenibacillus polymyxa
1.18.6.1 additional information
-
-
Rhodospirillum rubrum
1.18.6.1 additional information
-
-
Bradyrhizobium lupini
1.18.6.1 additional information
-
activity of Fe proteins and MoFe proteins Klebsiella pneumoniae
1.18.6.1 additional information
-
activity of Fe proteins and MoFe proteins Clostridium pasteurianum
1.18.6.1 additional information
-
activity of Fe proteins and MoFe proteins Azotobacter vinelandii
1.18.6.1 additional information
-
activity of Fe proteins and MoFe proteins Allochromatium vinosum
1.18.6.1 additional information
-
activity of Fe proteins and MoFe proteins Azotobacter chroococcum

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O
-
Bradyrhizobium japonicum 8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O
-
Klebsiella pneumoniae 8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O
-
Clostridium pasteurianum 8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O
-
Azotobacter vinelandii 8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O
-
Paenibacillus polymyxa 8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O
-
Rhodospirillum rubrum 8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O
-
Allochromatium vinosum 8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O
-
Bradyrhizobium lupini 8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?
1.18.6.1 8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O
-
Azotobacter chroococcum 8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate
-
?

Subunits

EC Number Subunits Comment Organism
1.18.6.1 dimer Fe protein is a dimer of 2 identical subunits, MW 27500-34600, various methods, overview Bradyrhizobium japonicum
1.18.6.1 dimer Fe protein is a dimer of 2 identical subunits, MW 27500-34600, various methods, overview Klebsiella pneumoniae
1.18.6.1 dimer Fe protein is a dimer of 2 identical subunits, MW 27500-34600, various methods, overview Clostridium pasteurianum
1.18.6.1 dimer Fe protein is a dimer of 2 identical subunits, MW 27500-34600, various methods, overview Azotobacter vinelandii
1.18.6.1 dimer Fe protein is a dimer of 2 identical subunits, MW 27500-34600, various methods, overview Paenibacillus polymyxa
1.18.6.1 dimer Fe protein is a dimer of 2 identical subunits, MW 27500-34600, various methods, overview Rhodospirillum rubrum
1.18.6.1 dimer Fe protein is a dimer of 2 identical subunits, MW 27500-34600, various methods, overview Allochromatium vinosum
1.18.6.1 dimer Fe protein is a dimer of 2 identical subunits, MW 27500-34600, various methods, overview Bradyrhizobium lupini
1.18.6.1 dimer Fe protein is a dimer of 2 identical subunits, MW 27500-34600, various methods, overview Azotobacter chroococcum