Nitrogenase (flavodoxin)

Identifiers

Databases

PDB structures

Nitrogenase (flavodoxin) (EC 1.19.6.1) is an enzyme with systematic name reduced flavodoxin:dinitrogen oxidoreductase (ATP-hydrolysing).^[1] This enzyme catalyses the following chemical reaction

6 reduced flavodoxin + 6 H⁺ + N₂ + n ATP

\rightleftharpoons

6 oxidized flavodoxin + 2 NH₃ + n ADP + n phosphate

The enzyme is a complex of two proteins containing iron-sulfur centres and molybdenum.

References

↑ Zumft, W.G.; Mortenson, L.E. (1975). "The nitrogen-fixing complex of bacteria". Biochim. Biophys. Acta. 416: 1–52. doi:10.1016/0304-4173(75)90012-9. PMID 164247.

Other oxidoreductases (EC 1.15-1.21)

1.15: Acting on superoxide as acceptor	Superoxide dismutase SOD1 SOD2 SOD3

1.16: Oxidizing metal ions	Ceruloplasmin

1.17: Acting on CH or CH2 groups	Xanthine oxidase Ribonucleotide reductase 4-Hydroxy-3-methylbut-2-enyl diphosphate reductase

1.18: Acting on iron-sulfur proteins as donors	Nitrogenase

1.19: Acting on reduced flavodoxin as donor	Nitrogenase (flavodoxin)

1.20: Acting on phosphorus or arsenic in donors	Glutaredoxin GLRX GLRX2 GLRX3 GLRX5

1.21: Acting on X-H and Y-H to form an X-Y bond	Isopenicillin N synthase Columbamine oxidase Reticuline oxidase Sulochrin oxidase (+)-bisdechlorogeodin-forming (-)-bisdechlorogeodin-forming Aureusidin synthase Tetrahydrocannabinolic acid synthase Cannabidiolic acid synthase Dichlorochromopyrrolate synthase

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list)

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