7SK9 | pdb_00007sk9

Cryo-EM structure of human ACKR3 in complex with a small molecule partial agonist CCX662, and an intracellular Fab

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM

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	e7sk9A1	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 [auth F]	C1-set_1	e7sk9F1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_1	ECOD (1.6)
B [auth F]	V-set_12	e7sk9F2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_12	ECOD (1.6)
C [auth E]	C1-set_4	e7sk9E2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_4	ECOD (1.6)
C [auth E]	V-set	e7sk9E1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth F]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
C [auth E]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth F]	Heavy Chain	IGHV3	-	atypical chemokine receptor 3	SAbDab (2025-09-26)
C [auth E]	Light Chain	IGKV1	Kappa	atypical chemokine receptor 3	SAbDab (2025-09-26)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
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	Atypical chemokine receptor 3	molecular transducer activity coreceptor activity signaling receptor activity G protein-coupled chemoattractant receptor activity C-C chemokine receptor activity chemokine receptor activity G protein-coupled receptor activity transmembrane signaling receptor activity cytokine receptor activity immune receptor activity cargo receptor activity scavenger receptor activity C-X-C chemokine receptor activity C-C chemokine binding molecular transducer activity coreceptor activity signaling receptor activity G protein-coupled chemoattractant receptor activity C-C chemokine receptor activity chemokine receptor activity G protein-coupled receptor activity transmembrane signaling receptor activity cytokine receptor activity immune receptor activity cargo receptor activity scavenger receptor activity C-X-C chemokine receptor activity C-C chemokine binding protein binding binding chemokine binding cytokine binding C-X-C chemokine binding	positive regulation of cytosolic calcium ion concentration biological regulation regulation of biological quality developmental process multicellular organismal process parasympathetic nervous system development nervous system development multicellular organism development nerve development cranial nerve development central nervous system development preganglionic parasympathetic fiber development anatomical structure development oculomotor nerve development positive regulation of cytosolic calcium ion concentration biological regulation regulation of biological quality developmental process multicellular organismal process parasympathetic nervous system development nervous system development multicellular organism development nerve development cranial nerve development central nervous system development preganglionic parasympathetic fiber development anatomical structure development oculomotor nerve development autonomic nervous system development system development cellular response to stimulus positive regulation of cell communication regulation of cellular process positive regulation of signal transduction response to stimulus signaling positive regulation of biological process regulation of signal transduction intracellular signal transduction cell communication positive regulation of response to stimulus positive regulation of ERK1 and ERK2 cascade regulation of intracellular signal transduction intracellular signaling cassette signal transduction positive regulation of cellular process regulation of biological process regulation of signaling positive regulation of MAPK cascade positive regulation of intracellular signal transduction regulation of MAPK cascade regulation of response to stimulus MAPK cascade regulation of cell communication cellular process ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade positive regulation of signaling localization import into cell receptor internalization transport receptor-mediated endocytosis endocytosis establishment of localization vesicle-mediated transport blood vessel morphogenesis tube development angiogenesis vasculature development circulatory system development anatomical structure morphogenesis tube morphogenesis anatomical structure formation involved in morphogenesis blood vessel development immune response immune system process cell surface receptor signaling pathway response to cytokine response to chemokine cytokine-mediated signaling pathway cellular response to chemokine chemokine-mediated signaling pathway response to peptide response to chemical G protein-coupled receptor signaling pathway cellular response to cytokine stimulus positive regulation of locomotion regulation of cell motility positive regulation of mesenchymal stem cell migration positive regulation of cell migration regulation of mesenchymal stem cell migration regulation of locomotion mesenchymal stem cell migration positive regulation of cell motility regulation of cell migration cell migration cell motility locomotion calcium-mediated signaling cell chemotaxis chemotaxis response to external stimulus cellular response to chemical stimulus taxis cellular developmental process vasculogenesis cell differentiation negative regulation of cell population proliferation cell population proliferation regulation of cell population proliferation negative regulation of cellular process negative regulation of biological process cell adhesion negative regulation of signaling negative regulation of intracellular signal transduction regulation of cellular response to stress regulation of intrinsic apoptotic signaling pathway in response to DNA damage regulation of programmed cell death regulation of intrinsic apoptotic signaling pathway negative regulation of cell communication cellular response to stress response to stress negative regulation of apoptotic signaling pathway regulation of response to stress intrinsic apoptotic signaling pathway in response to DNA damage intrinsic apoptotic signaling pathway negative regulation of response to stimulus negative regulation of programmed cell death regulation of apoptotic process cell death negative regulation of signal transduction negative regulation of intrinsic apoptotic signaling pathway in response to DNA damage apoptotic signaling pathway negative regulation of intrinsic apoptotic signaling pathway negative regulation of apoptotic process DNA damage response apoptotic process programmed cell death regulation of apoptotic signaling pathway	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane clathrin-coated pit endomembrane system membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle intracellular membrane-bounded organelle cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane clathrin-coated pit endomembrane system membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle intracellular membrane-bounded organelle early endosome endosome intracellular vesicle cytoplasmic vesicle cytoplasm vesicle recycling endosome
B [auth F]	CID24 Fab heavy chain	-	-	-
C [auth E]	CID24 Fab light chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR001416	Atypical chemokine receptor 3	Family
A	IPR000276	G protein-coupled receptor, rhodopsin-like	Family
A	IPR017452	GPCR, rhodopsin-like, 7TM	Domain
A	IPR047143	G-protein coupled estrogen receptor 1-like	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P25106	rheumatoid arthritis Liver Cirrhosis, Experimental carcinoma sarcomatoid carcinoma kidney disease colorectal cancer hepatocellular carcinoma malignant ependymoma pancreatic intraductal papillary-mucinous carcinoma adenoma pituitary cancer astrocytic tumor breast cancer tuberculosis colorectal carcinoma rheumatoid arthritis Liver Cirrhosis, Experimental carcinoma sarcomatoid carcinoma kidney disease colorectal cancer hepatocellular carcinoma malignant ependymoma pancreatic intraductal papillary-mucinous carcinoma adenoma pituitary cancer astrocytic tumor breast cancer tuberculosis colorectal carcinoma ductal breast carcinoma in situ gastric carcinoma invasive ductal breast carcinoma lung adenocarcinoma malignant mesothelioma oligodendroglioma pancreatic intraductal papillary-mucinous neoplasm adrenal cortex carcinoma polycystic ovary syndrome atopic eczema breast carcinoma ulcerative colitis facioscapulohumeral muscular dystrophy glioblastoma lung cancer medulloblastoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia psoriasis atypical teratoid rhabdoid tumor sinusitis breast fibroadenoma undifferentiated carcinoma dermatomyositis gastric cancer

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
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	PDBTM	Annotated as membrane protein by PDBTM

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.