Entry |
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Name |
nitric-oxide synthase (flavodoxin);
nitric oxide synthetase (ambiguous);
NO synthase (ambiguous)
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Class |
Oxidoreductases;
Acting on paired donors, with incorporation or reduction of molecular oxygen;
With reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen into the other donor
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Sysname |
L-arginine,reduced-flavodoxin:oxygen oxidoreductase (nitric-oxide-forming)
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Reaction(IUBMB) |
2 L-arginine + 3 reduced flavodoxin + 4 O2 = 2 L-citrulline + 2 nitric oxide + 3 oxidized flavodoxin + 4 H2O (overall reaction) [RN: R11711];
(1a) 2 L-arginine + 2 reduced flavodoxin + 2 O2 = 2 Nomega-hydroxy-L-arginine + 2 oxidized flavodoxin + 2 H2O [RN: R11712];
(1b) 2 Nomega-hydroxy-L-arginine + reduced flavodoxin + 2 O2 = 2 L-citrulline + 2 nitric oxide + oxidized flavodoxin + 2 H2O [RN: R11713]
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Reaction(KEGG) |
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Substrate |
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Product |
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Comment |
Binds heme (iron protoporphyrin IX) and tetrahydrobiopterin. The enzyme, found in bacteria and archaea, consist of only an oxygenase domain and functions together with bacterial ferredoxins or flavodoxins. The orthologous enzymes from plants and animals also contain a reductase domain and use only NADPH as the electron donor (cf. EC 1.14.13.39).
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History |
EC 1.14.14.47 created 2012 as EC 1.14.13.165, transferred 2017 to EC 1.14.14.47
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Pathway |
ec00330 | Arginine and proline metabolism |
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Orthology |
K00491 | nitric-oxide synthase, bacterial |
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Genes |
» show all
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Reference |
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Authors |
Pant K, Bilwes AM, Adak S, Stuehr DJ, Crane BR |
Title |
Structure of a nitric oxide synthase heme protein from Bacillus subtilis. |
Journal |
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Sequence |
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Reference |
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Authors |
Adak S, Aulak KS, Stuehr DJ |
Title |
Direct evidence for nitric oxide production by a nitric-oxide synthase-like protein from Bacillus subtilis. |
Journal |
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Reference |
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Authors |
Wang ZQ, Lawson RJ, Buddha MR, Wei CC, Crane BR, Munro AW, Stuehr DJ |
Title |
Bacterial flavodoxins support nitric oxide production by Bacillus subtilis nitric-oxide synthase. |
Journal |
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Reference |
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Authors |
Agapie T, Suseno S, Woodward JJ, Stoll S, Britt RD, Marletta MA |
Title |
NO formation by a catalytically self-sufficient bacterial nitric oxide synthase from Sorangium cellulosum. |
Journal |
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Reference |
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Authors |
Holden JK, Lim N, Poulos TL |
Title |
Identification of redox partners and development of a novel chimeric bacterial nitric oxide synthase for structure activity analyses. |
Journal |
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Sequence |
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Other DBs |
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