6AK3

Crystal structure of the human prostaglandin E receptor EP3 bound to prostaglandin E2

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
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: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth B]	SCOP2B Superfamily	G protein-coupled receptor-like	8091250	3000473	SCOP2B (2022-06-29)
B [auth A]	SCOP2 Family	Class A (rhodopsin) G protein-coupled receptor-like	8091249	4001858	SCOP2 (2022-06-29)
B [auth A]	SCOP2 Superfamily	G protein-coupled receptor-like	8091250	3000473	SCOP2 (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 [auth B]	7tm_1_3	e6ak3B1	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_3	ECOD (1.6)
B [auth A]	7tm_1_3	e6ak3A1	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_3	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth B], B [auth A]	PF07361	Cytochrome b562 (Cytochrom_B562)	Cytochrome b562	-	Family
A [auth B], B [auth A]	PF00001	7 transmembrane receptor (rhodopsin family) (7tm_1)	7 transmembrane receptor (rhodopsin family)	This family contains, amongst other G-protein-coupled receptors (GCPRs), members of the opsin family, which have been considered to be typical members of the rhodopsin superfamily. They share several motifs, mainly the seven transmembrane helices, GC ...	This family contains, amongst other G-protein-coupled receptors (GCPRs), members of the opsin family, which have been considered to be typical members of the rhodopsin superfamily. They share several motifs, mainly the seven transmembrane helices, GCPRs of the rhodopsin superfamily. All opsins bind a chromophore, such as 11-cis-retinal. The function of most opsins other than the photoisomerases is split into two steps: light absorption and G-protein activation. Photoisomerases, on the other hand, are not coupled to G-proteins - they are thought to generate and supply the chromophore that is used by visual opsins [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth B], B [auth A]	Prostaglandin E2 receptor EP3 subtype,Soluble cytochrome b562	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 prostaglandin E receptor activity prostanoid receptor activity molecular transducer activity G protein-coupled receptor activity 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 prostaglandin E receptor activity prostanoid receptor activity molecular transducer activity G protein-coupled receptor activity transmembrane signaling receptor activity signaling receptor activity icosanoid receptor activity prostaglandin receptor activity	electron transport chain metabolic process cellular process generation of precursor metabolites and energy cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation adenylate cyclase-activating G protein-coupled receptor signaling pathway cell communication adenylate cyclase-modulating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway electron transport chain metabolic process cellular process generation of precursor metabolites and energy cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation adenylate cyclase-activating G protein-coupled receptor signaling pathway cell communication adenylate cyclase-modulating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway signal transduction positive regulation of cytosolic calcium ion concentration regulation of biological quality intestine smooth muscle contraction multicellular organismal process gastro-intestinal system smooth muscle contraction system process smooth muscle contraction phasic smooth muscle contraction muscle contraction muscle system process cell death phospholipase C-activating G protein-coupled receptor signaling pathway defense response response to stress inflammatory response regulation of localization transport digestive system process regulation of system process negative regulation of biological process negative regulation of transport localization negative regulation of secretion regulation of multicellular organismal process negative regulation of digestive system process regulation of gastric acid secretion regulation of transport secretion acid secretion regulation of digestive system process establishment of localization gastric acid secretion regulation of secretion digestion negative regulation of multicellular organismal process negative regulation of gastric acid secretion acute-phase response regulation of defense response regulation of heat generation regulation of response to external stimulus homeostatic process positive regulation of heat generation positive regulation of biological process positive regulation of acute inflammatory response heat generation positive regulation of response to stimulus positive regulation of response to external stimulus positive regulation of inflammatory response regulation of response to stress positive regulation of fever generation acute inflammatory response fever generation response to external stimulus regulation of inflammatory response multicellular organismal-level homeostasis regulation of response to stimulus positive regulation of defense response temperature homeostasis regulation of acute inflammatory response positive regulation of multicellular organismal process regulation of fever generation	cellular anatomical structure periplasmic space membrane membrane-bounded organelle intracellular organelle organelle envelope intracellular anatomical structure organelle nuclear envelope nucleus intracellular membrane-bounded organelle endomembrane system cell periphery plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth B], B [auth A]	IPR010980	Cytochrome c/b562	Homologous Superfamily
A [auth B], B [auth A]	IPR009155	Cytochrome b562	Family
A [auth B], B [auth A]	IPR008365	Prostanoid receptor	Family
A [auth B], B [auth A]	IPR000276	G protein-coupled receptor, rhodopsin-like	Family
A [auth B], B [auth A]	IPR000265	Prostanoid EP3 receptor	Family
A [auth B], B [auth A]	IPR017452	GPCR, rhodopsin-like, 7TM	Domain
A [auth B], B [auth A]	IPR001244	Prostaglandin DP receptor	Family
A [auth B], B [auth A]	IPR001481	Prostanoid EP3 receptor, type 2	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth B], B [auth A]	Pharos: P43115	Stevens-Johnson syndrome polycystic ovary syndrome mucous membrane pemphigoid drug allergy medulloblastoma ocular cicatricial pemphigoid ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia adenoma pilocytic astrocytoma astrocytic tumor Postpartum hemorrhage ductal breast carcinoma in situ thrombotic disease invasive ductal breast carcinoma Stevens-Johnson syndrome polycystic ovary syndrome mucous membrane pemphigoid drug allergy medulloblastoma ocular cicatricial pemphigoid ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia adenoma pilocytic astrocytoma astrocytic tumor Postpartum hemorrhage ductal breast carcinoma in situ thrombotic disease invasive ductal breast carcinoma malignant ependymoma oligodendroglioma pancreatic intraductal papillary-mucinous carcinoma adrenal cortex adenoma pituitary cancer atopic eczema primitive neuroectodermal tumor schizophrenia gastric carcinoma large cell medulloblastoma malignant glioma pancreatic intraductal papillary-mucinous neoplasm periodontitis adrenal cortex carcinoma atypical teratoid rhabdoid tumor psoriasis glioblastoma toxic epidermal necrolysis malignant colon neoplasm

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A [auth B], B [auth A]	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 [auth B], B [auth A]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A [auth B], B [auth A]	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A [auth B], B [auth A]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	G Protein-Coupled Receptors: Class A	prostanoid receptor EP₃ with bound PGE₂

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.