Annotations: 2HX2

Bovine eNOS heme domain complexed with (4S)-N-{4-Amino-5-[(2-aminoethyl)-hydroxyamino]-pentyl}-N'-nitroguanidine

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d2hx2b_	Alpha and beta proteins (a+b)	Nitric oxide (NO) synthase oxygenase domain	Nitric oxide (NO) synthase oxygenase domain	Nitric oxide (NO) synthase oxygenase domain	Nitric oxide (NO) synthase oxygenase domain	cattle (Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
A	d2hx2a_	Alpha and beta proteins (a+b)	Nitric oxide (NO) synthase oxygenase domain	Nitric oxide (NO) synthase oxygenase domain	Nitric oxide (NO) synthase oxygenase domain	Nitric oxide (NO) synthase oxygenase domain	cattle (Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	Nitric oxide (NO) synthase oxygenase domain	8035505	3001407	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Nitric oxide (NO) synthase oxygenase domain	8035505	3001407	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	RNA_pol_Rpb2_2	e2hx2B1	A: alpha arrays	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: RNA_pol_Rpb2_2	ECOD (v295.2)
A	RNA_pol_Rpb2_2	e2hx2A1	A: alpha arrays	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: RNA_pol_Rpb2_2	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.90.340.10	Alpha Beta	Alpha-Beta Complex	Nitric Oxide Synthase	Chain A, domain 1	CATH (4.3.0)
B	3.90.440.10	Alpha Beta	Alpha-Beta Complex	Nitric Oxide Synthase	Heme Domain	CATH (4.3.0)
B	3.90.1230.10	Alpha Beta	Alpha-Beta Complex	Bovine Endothelial Nitric Oxide Synthase Heme Domain	Chain: A,domain 3	CATH (4.3.0)
A	3.90.340.10	Alpha Beta	Alpha-Beta Complex	Nitric Oxide Synthase	Chain A, domain 1	CATH (4.3.0)
A	3.90.440.10	Alpha Beta	Alpha-Beta Complex	Nitric Oxide Synthase	Heme Domain	CATH (4.3.0)
A	3.90.1230.10	Alpha Beta	Alpha-Beta Complex	Bovine Endothelial Nitric Oxide Synthase Heme Domain	Chain: A,domain 3	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Nitric-oxide synthase	FMN binding binding nucleoside phosphate binding ion binding anion binding nucleotide binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding flavin adenine dinucleotide binding purine nucleotide binding adenyl nucleotide binding NADP binding FMN binding binding nucleoside phosphate binding ion binding anion binding nucleotide binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding flavin adenine dinucleotide binding purine nucleotide binding adenyl nucleotide binding NADP binding tetrapyrrole binding heme binding oxidoreductase activity monooxygenase activity oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen nitric-oxide synthase activity oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, NAD(P)H as one donor, and incorporation of one atom of oxygen catalytic activity protein binding calmodulin binding cation binding metal ion binding	multicellular organismal process regulation of body fluid levels wound healing response to stimulus hemostasis biological regulation blood coagulation response to stress coagulation regulation of biological quality response to wounding response to hormone response to chemical response to endogenous stimulus multicellular organismal process regulation of body fluid levels wound healing response to stimulus hemostasis biological regulation blood coagulation response to stress coagulation regulation of biological quality response to wounding response to hormone response to chemical response to endogenous stimulus response to peptide hormone response to oxygen-containing compound response to nitrogen compound catabolic process oxoacid metabolic process carboxylic acid metabolic process amino acid metabolic process primary metabolic process arginine metabolic process proteinogenic amino acid metabolic process L-arginine catabolic process proteinogenic amino acid catabolic process carboxylic acid catabolic process metabolic process cellular process small molecule metabolic process small molecule catabolic process amino acid catabolic process regulation of biological process regulation of cellular process regulation of cell adhesion negative regulation of biological process leukocyte cell-cell adhesion negative regulation of cell adhesion cell adhesion cell-cell adhesion negative regulation of leukocyte cell-cell adhesion negative regulation of cell-cell adhesion regulation of leukocyte cell-cell adhesion negative regulation of cellular process regulation of cell-cell adhesion cellular response to stimulus extrinsic apoptotic signaling pathway via death domain receptors signaling negative regulation of signaling regulation of signal transduction regulation of programmed cell death extrinsic apoptotic signaling pathway negative regulation of cell communication cell communication negative regulation of extrinsic apoptotic signaling pathway negative regulation of apoptotic signaling pathway signal transduction regulation of signaling cell surface receptor signaling pathway negative regulation of response to stimulus negative regulation of programmed cell death regulation of apoptotic process negative regulation of extrinsic apoptotic signaling pathway via death domain receptors cell death negative regulation of signal transduction regulation of extrinsic apoptotic signaling pathway apoptotic signaling pathway negative regulation of apoptotic process regulation of response to stimulus regulation of extrinsic apoptotic signaling pathway via death domain receptors regulation of cell communication apoptotic process programmed cell death regulation of apoptotic signaling pathway system process relaxation of smooth muscle regulation of system process positive regulation of biological process regulation of muscle system process muscle system process relaxation of muscle positive regulation of relaxation of smooth muscle positive regulation of relaxation of muscle positive regulation of multicellular organismal process regulation of multicellular organismal process regulation of relaxation of smooth muscle regulation of relaxation of muscle response to laminar fluid shear stress cellular response to stress cellular response to laminar fluid shear stress response to fluid shear stress cellular response to fluid shear stress cellular component organization organelle organization cellular component organization or biogenesis mitochondrion organization biological process involved in interspecies interaction between organisms response to lipid response to other organism response to external stimulus response to lipopolysaccharide response to biotic stimulus response to bacterium response to external biotic stimulus response to molecule of bacterial origin circulatory system process regulation of blood pressure negative regulation of blood pressure blood circulation nitric oxide metabolic process nitric oxide biosynthetic process biosynthetic process reactive nitrogen species metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane microdomain cell periphery membrane raft plasma membrane raft membrane plasma membrane plasma membrane region caveola membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane microdomain cell periphery membrane raft plasma membrane raft membrane plasma membrane plasma membrane region caveola membrane-bounded organelle intracellular organelle Golgi apparatus organelle intracellular membrane-bounded organelle endomembrane system cytoskeleton membraneless organelle intracellular membraneless organelle nucleus

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR001709	Flavoprotein pyridine nucleotide cytochrome reductase	Domain
A, B	IPR044943	Nitric oxide synthase, domain 1 superfamily	Homologous Superfamily
A, B	IPR001433	Oxidoreductase FAD/NAD(P)-binding	Domain
A, B	IPR003097	Sulfite reductase [NADPH] flavoprotein alpha-component-like, FAD-binding	Domain
A, B	IPR017938	Riboflavin synthase-like beta-barrel	Homologous Superfamily
A, B	IPR001094	Flavodoxin-like	Domain
A, B	IPR044940	Nitric oxide synthase, domain 2 superfamily	Homologous Superfamily
A, B	IPR004030	Nitric oxide synthase, N-terminal	Domain
A, B	IPR023173	NADPH-cytochrome p450 reductase, FAD-binding, alpha-helical domain superfamily	Homologous Superfamily
A, B	IPR008254	Flavodoxin/nitric oxide synthase	Domain
A, B	IPR039261	Ferredoxin-NADP reductase (FNR), nucleotide-binding domain	Homologous Superfamily
A, B	IPR017927	FAD-binding domain, ferredoxin reductase-type	Domain
A, B	IPR029039	Flavoprotein-like superfamily	Homologous Superfamily
A, B	IPR050607	Nitric Oxide Synthase (NOS)	Family
A, B	IPR012144	Nitric-oxide synthase, eukaryote	Family
A, B	IPR036119	Nitric oxide synthase, N-terminal domain superfamily	Homologous Superfamily
A, B	IPR044944	Nitric oxide synthase, domain 3 superfamily	Homologous Superfamily

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.