4EA3

Structure of the N/OFQ Opioid Receptor in Complex with a Peptide Mimetic

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: mpstruc

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4ea3a_	Membrane and cell surface proteins and peptides	Class A G protein-coupled receptor (GPCR)-like	Class A G protein-coupled receptor (GPCR)-like	automated matches	automated matches	(Escherichia coli ) [TaxId: 562 ], (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	G protein-coupled receptor-like	8091212	3000473	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	G protein-coupled receptor-like	8091212	3000473	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Cytochromes	8057879	3001526	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)
A	7tm_1_1	e4ea3A1	A: alpha bundles	X: Family A G protein-coupled receptor-like (From Topology)	H: Family A G protein-coupled receptor-like (From Topology)	T: Family A G protein-coupled receptor-like	F: 7tm_1_1	ECOD (1.6)
B	7tm_1_1	e4ea3B3	A: alpha bundles	X: Family A G protein-coupled receptor-like (From Topology)	H: Family A G protein-coupled receptor-like (From Topology)	T: Family A G protein-coupled receptor-like	F: 7tm_1_1	ECOD (1.6)
B	Cytochrom_B562_1	e4ea3B2	A: alpha bundles	X: Four-helical up-and-down bundle	H: Cytochromes (From Topology)	T: Cytochromes	F: Cytochrom_B562_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.1070.10	Mainly Alpha	Up-down Bundle	Rhopdopsin 7-helix transmembrane proteins	Rhodopsin 7-helix transmembrane proteins	CATH (4.3.0)
B	1.20.120.10	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Cytochrome c/b562	CATH (4.3.0)
B	1.20.1070.10	Mainly Alpha	Up-down Bundle	Rhopdopsin 7-helix transmembrane proteins	Rhodopsin 7-helix transmembrane proteins	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00001	7 transmembrane receptor (rhodopsin family) (7tm_1)	7 transmembrane receptor (rhodopsin family)	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Fusion protein of Nociceptin receptor and cytochrome b562	molecular transducer activity G protein-coupled receptor activity transmembrane signaling receptor activity signaling receptor activity peptide receptor activity G protein-coupled opioid receptor activity G protein-coupled peptide receptor activity nociceptin receptor activity binding neuropeptide binding peptide binding organic cyclic compound binding tetrapyrrole binding heme binding molecular transducer activity G protein-coupled receptor activity transmembrane signaling receptor activity signaling receptor activity peptide receptor activity G protein-coupled opioid receptor activity G protein-coupled peptide receptor activity nociceptin receptor activity binding neuropeptide binding peptide binding organic cyclic compound binding tetrapyrrole binding heme binding electron transfer activity cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding	cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell communication G protein-coupled receptor signaling pathway cellular process signal transduction neuropeptide signaling pathway ovulation cycle rhythmic process estrous cycle cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell communication G protein-coupled receptor signaling pathway cellular process signal transduction neuropeptide signaling pathway ovulation cycle rhythmic process estrous cycle reproductive process multicellular organismal reproductive process regulation of body fluid levels multicellular organismal process renal system process system process positive regulation of urine volume regulation of urine volume regulation of biological quality behavior eating behavior feeding behavior intracellular signal transduction calcium-mediated signaling intracellular signaling cassette sensory perception nervous system process phospholipase C-activating G protein-coupled receptor signaling pathway rhythmic behavior circadian rhythm regulation of circadian rhythm regulation of behavior circadian behavior locomotory behavior regulation of locomotor rhythm regulation of multicellular organismal process locomotor rhythm adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway adenylate cyclase-modulating G protein-coupled receptor signaling pathway learning learning or memory cognition conditioned place preference associative learning negative regulation of signaling negative regulation of biological process regulation of signal transduction negative regulation of G protein-coupled receptor signaling pathway negative regulation of cell communication negative regulation of cellular process regulation of G protein-coupled receptor signaling pathway regulation of signaling negative regulation of response to stimulus adenylate cyclase-activating G protein-coupled receptor signaling pathway negative regulation of signal transduction negative regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway regulation of response to stimulus regulation of cell communication regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway negative regulation of intracellular signal transduction cAMP-mediated signaling regulation of intracellular signal transduction negative regulation of cAMP-mediated signaling regulation of cAMP-mediated signaling sensory perception of pain response to lipid response to chemical response to estradiol response to oxygen-containing compound response to organic cyclic compound circulatory system process regulation of blood pressure negative regulation of blood pressure blood circulation electron transport chain metabolic process generation of precursor metabolites and energy	cell periphery cellular anatomical structure plasma membrane membrane cell projection neuron projection plasma membrane bounded cell projection membrane-bounded organelle intracellular organelle intracellular anatomical structure cytoplasmic vesicle organelle intracellular vesicle cytoplasm cell periphery cellular anatomical structure plasma membrane membrane cell projection neuron projection plasma membrane bounded cell projection membrane-bounded organelle intracellular organelle intracellular anatomical structure cytoplasmic vesicle organelle intracellular vesicle cytoplasm intracellular membrane-bounded organelle vesicle periplasmic space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR001418	Opioid receptor	Family
A, B	IPR000276	G protein-coupled receptor, rhodopsin-like	Family
A, B	IPR017452	GPCR, rhodopsin-like, 7TM	Domain
A, B	IPR001420	X opioid receptor	Family
A, B	IPR010980	Cytochrome c/b562	Homologous Superfamily
A, B	IPR009155	Cytochrome b562	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P41146	substance withdrawal syndrome Hypokinesia opiate dependence morphine dependence restless legs syndrome pain agnosia heart disease metabolic syndrome X

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B	OPM	Transmembrane	Alpha-helical polytopic	Rhodopsin-like receptors and pumps	G-protein coupled receptors, family A

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	G Protein-Coupled Receptors: Class A	Nociceptin/orphanin FQ (N/OFQ) receptor with bound peptide

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.