Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyNitric oxide (NO) synthase oxygenase domain 8079785 3001407 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyNitric oxide (NO) synthase oxygenase domain 8079785 3001407 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ANO_synthasee3nosA1 A: a+b complex topologyX: Nitric oxide (NO) synthase oxygenase domain (From Topology)H: Nitric oxide (NO) synthase oxygenase domain (From Topology)T: Nitric oxide (NO) synthase oxygenase domainF: NO_synthaseECOD (1.6)
BNO_synthasee3nosB1 A: a+b complex topologyX: Nitric oxide (NO) synthase oxygenase domain (From Topology)H: Nitric oxide (NO) synthase oxygenase domain (From Topology)T: Nitric oxide (NO) synthase oxygenase domainF: NO_synthaseECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
ENDOTHELIAL NITRIC-OXIDE SYNTHASE

Pharos: Disease Associations Pharos Homepage Annotation

ChainsDrug Target  Associated Disease
A, B
PharosP29474

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
nitric-oxide synthase  M-CSA #935

Nitric oxide synthase (NOS) enzymes produce nitric oxide (NO) by catalysing a five-electron oxidation of a guanidino nitrogen of L-arginine (L-Arg). Oxidation of L-Arg to L-citrulline occurs via two successive monooxygenation reactions producing N(omega)-hydroxy-L-arginine as an intermediate. 2 Mols of dioxygen and 1.5 Mol of NADPH are consumed per mole of NO formed [PMID: 8782597]. Arginine-derived NO synthesis has been identified in mammals, fish, birds, invertebrates, plants, and bacteria [PMID: 8782597].

Defined by 4 residues: CYS:A-119 [auth A-184]ARG:A-122 [auth A-187]TRP:A-291 [auth A-356]GLU:A-296 [auth A-361]
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