CATH Classification

Domain Context

CATH Clusters

Superfamily Nitric Oxide Synthase; Chain A, domain 1
Functional Family Nitric oxide synthase, endothelial

Enzyme Information

1.14.13.39
Nitric-oxide synthase (NADPH).
based on mapping to UniProt P29473
2 L-arginine + 3 NADPH + 4 O(2) = 2 L-citrulline + 2 nitric oxide + 3 NADP(+) + 4 H(2)O.
-!- The enzyme consists of linked oxygenase and reductase domains. -!- The eukaryotic enzyme binds FAD, FMN, heme (iron protoporphyrin IX) and tetrahydrobiopterin, and its two domains are linked via a regulatory calmodulin-binding domain. -!- Upon calcium-induced calmodulin binding, the reductase and oxygenase domains form a complex, allowing electrons to flow from NADPH via FAD and FMN to the active center. -!- The reductase domain of the enzyme from the bacterium Sorangium cellulosum utilizes a [2Fe-2S] cluster to transfer the electrons from NADPH to the active center. -!- Cf. EC 1.14.14.47.

UniProtKB Entries (1)

P29473
NOS3_BOVIN
Bos taurus
Nitric oxide synthase, endothelial

PDB Structure

PDB 4UPS
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Combination of Chiral Linkers with Thiophenecarboximidamide Heads to Improve the Selectivity of Inhibitors of Neuronal Nitric Oxide Synthase.
Jing, Q., Li, H., Roman, L.J., Martasek, P., Poulos, T.L., Silverman, R.B.
Bioorg.Med.Chem.Lett.