CATH Domain 2orpA03

CATH Classification

Level	CATH Code	Description
	3	Alpha Beta
	3.90	Alpha-Beta Complex
	3.90.1230	Bovine Endothelial Nitric Oxide Synthase Heme Domain; Chain: A,domain 3
	3.90.1230.10	Nitric Oxide Synthase; Chain A, domain 3

Domain Context

CATH Clusters

Superfamily	Nitric Oxide Synthase; Chain A, domain 3
Functional Family

Enzyme Information

1.14.13.39

Nitric-oxide synthase (NADPH).

based on mapping to UniProt P29477

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)

P29477

NOS2_MOUSE

Mus musculus

Nitric oxide synthase, inducible

PDB Structure

PDB	2ORP
External Links	PDBSum Proteopedia
Method	X-RAY DIFFRACTION
Organism	Escherichia
Primary Citation	Design, Synthesis, and Activity of 2-Imidazol-1-ylpyrimidine Derived Inducible Nitric Oxide Synthase Dimerization Inhibitors Davey, D.D., Adler, M., Arnaiz, D., Eagen, K., Erickson, S., Guilford, W., Kenrick, M., Morrissey, M.M., Ohlmeyer, M., Pan, G., Paradkar, V.M., Parkinson, J., Polokoff, M., Saionz, K., Santos, C., Subramanyam, B., Vergona, R., Wei, R.G., Whitlow, M., Ye, B., Zhao, Z.S., Devlin, J.J., Phillips, G. J.Med.Chem.