2LOW

Solution structure of AR55 in 50% HFIP

External Resource: Annotation

Domain Annotation: ECOD Classification
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	F_UNCLASSIFIED	e2lowA1	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: F_UNCLASSIFIED	ECOD (1.6)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Apelin receptor	peptide receptor activity molecular transducer activity G protein-coupled receptor activity G protein-coupled peptide receptor activity transmembrane signaling receptor activity signaling receptor activity apelin receptor activity G protein-coupled chemoattractant receptor activity C-C chemokine receptor activity chemokine receptor activity cytokine receptor activity immune receptor activity C-C chemokine binding protein binding peptide receptor activity molecular transducer activity G protein-coupled receptor activity G protein-coupled peptide receptor activity transmembrane signaling receptor activity signaling receptor activity apelin receptor activity G protein-coupled chemoattractant receptor activity C-C chemokine receptor activity chemokine receptor activity cytokine receptor activity immune receptor activity C-C chemokine binding protein binding binding chemokine binding cytokine binding	cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell communication apelin receptor signaling pathway G protein-coupled receptor signaling pathway cellular process signal transduction developmental process multicellular organism development multicellular organismal process cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell communication apelin receptor signaling pathway G protein-coupled receptor signaling pathway cellular process signal transduction developmental process multicellular organism development multicellular organismal process head development central nervous system development anatomical structure development animal organ development brain development nervous system development system development positive regulation of cytosolic calcium ion concentration regulation of biological quality heart development circulatory system development atrioventricular valve development heart valve development cardiac chamber morphogenesis heart morphogenesis ventricular septum development anatomical structure morphogenesis cardiac septum development cardiac septum morphogenesis ventricular septum morphogenesis cardiac chamber development animal organ morphogenesis cardiac ventricle development regulation of body fluid levels neurogenesis cellular developmental process cell differentiation blood vessel morphogenesis tube development angiogenesis vasculature development tube morphogenesis anatomical structure formation involved in morphogenesis blood vessel development immune response immune system process regulation of blood vessel endothelial cell proliferation involved in sprouting angiogenesis positive regulation of cell population proliferation endothelial cell proliferation positive regulation of biological process positive regulation of endothelial cell proliferation epithelial cell proliferation positive regulation of cellular process positive regulation of blood vessel endothelial cell proliferation involved in sprouting angiogenesis cell population proliferation blood vessel endothelial cell proliferation involved in sprouting angiogenesis positive regulation of epithelial cell proliferation sprouting angiogenesis regulation of endothelial cell proliferation regulation of cell population proliferation regulation of epithelial cell proliferation regulation of biosynthetic process cellular biosynthetic process cellular metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of cellular biosynthetic process regulation of gene expression biosynthetic process regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process regulation of metabolic process embryonic morphogenesis embryo development gastrulation inhibitory G protein-coupled receptor phosphorylation negative adaptation of signaling pathway positive regulation of phosphorylation negative regulation of biological process regulation of signal transduction positive regulation of inhibitory G protein-coupled receptor phosphorylation positive regulation of phosphate metabolic process negative regulation of G protein-coupled receptor signaling pathway regulation of primary metabolic process positive regulation of metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process positive regulation of macromolecule metabolic process protein modification process phosphorus metabolic process positive regulation of protein phosphorylation regulation of G protein-coupled receptor signaling pathway protein phosphorylation positive regulation of phosphorus metabolic process phosphorylation regulation of protein metabolic process primary metabolic process regulation of response to stimulus adaptation of signaling pathway macromolecule modification regulation of phosphorus metabolic process regulation of protein modification process regulation of protein phosphorylation negative regulation of signaling positive regulation of protein metabolic process desensitization of G protein-coupled receptor signaling pathway positive regulation of cellular metabolic process negative regulation of cell communication positive regulation of protein modification process negative regulation of cellular process protein metabolic process regulation of signaling organonitrogen compound metabolic process negative regulation of response to stimulus negative regulation of signal transduction regulation of inhibitory G protein-coupled receptor phosphorylation regulation of cell communication regulation of phosphorylation mesenchyme morphogenesis endocardial cushion morphogenesis mesenchyme development tissue development endocardial cushion formation tissue morphogenesis endocardial cushion development artery development aorta development intracellular signal transduction calcium-mediated signaling intracellular signaling cassette cell chemotaxis chemotaxis response to external stimulus cellular response to chemical stimulus taxis response to chemical cell migration cell motility locomotion vasculogenesis regulation of developmental process regulation of vasculature development positive regulation of developmental process regulation of multicellular organismal process regulation of anatomical structure morphogenesis regulation of multicellular organismal development positive regulation of angiogenesis positive regulation of vasculature development regulation of angiogenesis positive regulation of multicellular organismal process venous blood vessel development regulation of calcium ion transport regulation of localization positive regulation of cation transmembrane transport positive regulation of calcium ion transport intracellular calcium ion homeostasis calcium ion transport localization positive regulation of monoatomic ion transport positive regulation of monoatomic ion transmembrane transport monoatomic cation homeostasis monoatomic cation transport intracellular monoatomic ion homeostasis regulation of release of sequestered calcium ion into cytosol regulation of monoatomic ion transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport maintenance of location transmembrane transport release of sequestered calcium ion into cytosol regulation of transmembrane transport chemical homeostasis cellular localization inorganic ion homeostasis transport homeostatic process monoatomic ion transmembrane transport calcium ion homeostasis regulation of monoatomic ion transmembrane transport negative regulation of sequestering of calcium ion metal ion transport maintenance of location in cell regulation of calcium ion transmembrane transport monoatomic cation transmembrane transport intracellular monoatomic cation homeostasis monoatomic ion homeostasis positive regulation of calcium ion transmembrane transport positive regulation of transmembrane transport monoatomic ion transport intracellular chemical homeostasis positive regulation of release of sequestered calcium ion into cytosol regulation of metal ion transport regulation of sequestering of calcium ion calcium ion transmembrane import into cytosol regulation of transport sequestering of calcium ion cellular homeostasis positive regulation of transport regulation of monoatomic cation transmembrane transport calcium ion transmembrane transport 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 adult heart development negative regulation of cellular metabolic process negative regulation of macromolecule metabolic process negative regulation of metabolic process negative regulation of cellular biosynthetic process negative regulation of gene expression negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process smooth muscle cell differentiation muscle cell differentiation muscle structure development vascular associated smooth muscle cell differentiation coronary vasculature development regulation of cellular component organization gap junction assembly regulation of gap junction assembly regulation of cellular component biogenesis cellular component organization cellular component biogenesis regulation of cell junction assembly cell junction organization cellular component assembly cell junction assembly cellular component organization or biogenesis cell-cell junction assembly cell-cell junction organization pattern specification process embryonic heart tube development embryonic heart tube morphogenesis heart looping determination of bilateral symmetry epithelial tube morphogenesis embryonic organ development determination of left/right symmetry specification of symmetry embryonic organ morphogenesis epithelium development morphogenesis of an epithelium determination of heart left/right asymmetry regionalization left/right pattern formation	cell periphery cell surface membrane plasma membrane cellular anatomical entity external side of plasma membrane side of membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR000276	G protein-coupled receptor, rhodopsin-like	Family
A	IPR003904	Apelin receptor	Family
A	IPR017452	GPCR, rhodopsin-like, 7TM	Domain

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A	OPM	Peptides	Alpha-helical peptides	Peptides of transmembrane proteins	GPCR peptides

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	G Protein-Coupled Receptors: Class A	Apelin receptor (AR) TM helix 1 in DPC micelles

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 R01GM133198.