EC Number |
Reaction |
Reference |
---|
1.14.13.39 | 2 L-arginine + 2 NADPH + 2 H+ + 2 O2 = 2 Nomega-hydroxy-L-arginine + 2 NADP+ + 2 H2O |
(1a) |
- |
1.14.13.39 | 2 L-arginine + 3 NADPH + 3 H+ + 4 O2 = 2 L-citrulline + 2 nitric oxide + 3 NADP+ + 4 H2O |
alignment of heme-binding domain amino acid sequences of NOS |
440217 |
1.14.13.39 | 2 L-arginine + 3 NADPH + 3 H+ + 4 O2 = 2 L-citrulline + 2 nitric oxide + 3 NADP+ + 4 H2O |
analysis of catalytic site by Fourier transform infrared spectroscopy, extent of modulation of vibrational modes upon photolysis of CO compound |
658116 |
1.14.13.39 | 2 L-arginine + 3 NADPH + 3 H+ + 4 O2 = 2 L-citrulline + 2 nitric oxide + 3 NADP+ + 4 H2O |
analysis of transition states via stopped-flow spectroscopy |
659336 |
1.14.13.39 | 2 L-arginine + 3 NADPH + 3 H+ + 4 O2 = 2 L-citrulline + 2 nitric oxide + 3 NADP+ + 4 H2O |
cytochrome P-450 enzyme |
440192, 440198 |
1.14.13.39 | 2 L-arginine + 3 NADPH + 3 H+ + 4 O2 = 2 L-citrulline + 2 nitric oxide + 3 NADP+ + 4 H2O |
dimerization is required, activation of NO-synthesis by enabling electron transfer between the reductase and the oxygenase domains, isolated monomers are inactive |
440221 |
1.14.13.39 | 2 L-arginine + 3 NADPH + 3 H+ + 4 O2 = 2 L-citrulline + 2 nitric oxide + 3 NADP+ + 4 H2O |
interaction and electrontransfer between enzyme domains and bound cofactors calmodulin, FMN, FAD, tetrahydrobiopterin, heme, and NADPH, overview |
674558 |
1.14.13.39 | 2 L-arginine + 3 NADPH + 3 H+ + 4 O2 = 2 L-citrulline + 2 nitric oxide + 3 NADP+ + 4 H2O |
isoform I and II are regulated by Ca2+/calmodulin, isoform II is Ca2+-independent, but requires calmodulin, inducible by cytokines |
440226 |
1.14.13.39 | 2 L-arginine + 3 NADPH + 3 H+ + 4 O2 = 2 L-citrulline + 2 nitric oxide + 3 NADP+ + 4 H2O |
overall reaction |
- |
1.14.13.39 | 2 L-arginine + 3 NADPH + 3 H+ + 4 O2 = 2 L-citrulline + 2 nitric oxide + 3 NADP+ + 4 H2O |
possible mechanism |
440198 |