8AS2 | pdb_00008as2

Structure of arrestin2 in complex with 4P CCR5 phosphopeptide and Fab30

External Resource: Annotation

Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Protein Modification Annotation

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
C [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
A	2.60.40.840	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (utative)
A	2.60.40.640	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
D [auth L]	Light Chain	IGKV1	Kappa	beta-arrestin-1 \| c-c chemokine receptor type 5	SAbDab (2025-11-28)
C [auth H]	Heavy Chain	IGHV3	-	beta-arrestin-1 \| c-c chemokine receptor type 5	SAbDab (2025-11-28)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00339	Arrestin (or S-antigen), N-terminal domain (Arrestin_N)	Arrestin (or S-antigen), N-terminal domain	Ig-like beta-sandwich fold. Scop reports duplication with C-terminal domain.	Domain
A	PF02752	Arrestin (or S-antigen), C-terminal domain (Arrestin_C)	Arrestin (or S-antigen), C-terminal domain	Ig-like beta-sandwich fold. Scop reports duplication with N-terminal domain.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
D [auth L]	Fab30 light chain	-	-	-
C [auth H]	Fab30 heavy chain	-	-	-
B	C-C chemokine receptor type 5	protein binding binding virus receptor activity exogenous protein binding molecular transducer activity coreceptor activity signaling receptor activity phosphoric ester hydrolase activity hydrolase activity, acting on ester bonds phosphoric diester hydrolase activity phospholipase C activity hydrolase activity phosphatidylinositol-4,5-bisphosphate phospholipase C activity catalytic activity protein binding binding virus receptor activity exogenous protein binding molecular transducer activity coreceptor activity signaling receptor activity phosphoric ester hydrolase activity hydrolase activity, acting on ester bonds phosphoric diester hydrolase activity phospholipase C activity hydrolase activity phosphatidylinositol-4,5-bisphosphate phospholipase C activity catalytic activity phospholipase activity lipase 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 cytoskeletal protein binding actin binding C-C chemokine binding chemokine binding cytokine binding chemokine (C-C motif) ligand 5 binding identical protein binding	regulation of cellular process leukocyte apoptotic process negative regulation of biological process regulation of programmed cell death macrophage apoptotic process negative regulation of leukocyte apoptotic process negative regulation of cellular process myeloid cell apoptotic process regulation of leukocyte apoptotic process regulation of biological process negative regulation of programmed cell death regulation of apoptotic process biological regulation negative regulation of macrophage apoptotic process regulation of cellular process leukocyte apoptotic process negative regulation of biological process regulation of programmed cell death macrophage apoptotic process negative regulation of leukocyte apoptotic process negative regulation of cellular process myeloid cell apoptotic process regulation of leukocyte apoptotic process regulation of biological process negative regulation of programmed cell death regulation of apoptotic process biological regulation negative regulation of macrophage apoptotic process cell death negative regulation of apoptotic process regulation of macrophage apoptotic process inflammatory cell apoptotic process cellular process negative regulation of myeloid cell apoptotic process apoptotic process regulation of myeloid cell apoptotic process programmed cell death positive regulation of cytosolic calcium ion concentration regulation of biological quality response to stimulus immune response immune system process response to sterol response to lipid response to alcohol response to chemical response to oxygen-containing compound response to cholesterol signaling cell-cell signaling cell communication cellular response to stimulus biological process involved in interspecies interaction between organisms response to other organism cellular response to lipopolysaccharide response to external stimulus cellular response to molecule of bacterial origin response to lipopolysaccharide cellular response to oxygen-containing compound response to biotic stimulus cellular response to biotic stimulus cellular response to chemical stimulus response to bacterium cellular response to lipid response to external biotic stimulus response to molecule of bacterial origin intracellular signal transduction calcium-mediated signaling intracellular signaling cassette signal transduction MAPK cascade chemotaxis taxis locomotion cell chemotaxis dendritic cell chemotaxis leukocyte migration dendritic cell migration mononuclear cell migration cell migration cell motility leukocyte chemotaxis cell surface receptor signaling pathway defense response response to stress cellular defense response localization transport monoatomic ion transport monoatomic cation transport establishment of localization calcium ion transport metal ion transport inflammatory response G protein-coupled receptor signaling pathway regulation of localization cellular localization inorganic ion homeostasis intracellular calcium ion homeostasis homeostatic process monoatomic ion transmembrane transport sarcoplasmic reticulum calcium ion transport calcium ion homeostasis release of sequestered calcium ion into cytosol by sarcoplasmic reticulum negative regulation of sequestering of calcium ion maintenance of location in cell monoatomic cation transmembrane transport intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis regulation of sequestering of calcium ion intracellular monoatomic ion homeostasis release of sequestered calcium ion into cytosol by endoplasmic reticulum calcium ion transmembrane import into cytosol sequestering of calcium ion maintenance of location transmembrane transport release of sequestered calcium ion into cytosol cellular homeostasis chemical homeostasis calcium ion transmembrane transport	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane intracellular anatomical structure cytoplasm membrane-bounded organelle endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane intracellular anatomical structure cytoplasm membrane-bounded organelle endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle vesicle
A	Beta-arrestin-1	protein binding binding arrestin family protein binding GTPase regulator activity enzyme regulator activity enzyme activator activity GTPase activator activity molecular function activator activity nucleoside-triphosphatase regulator activity molecular function regulator activity angiotensin receptor binding signaling receptor binding G protein-coupled receptor binding molecular adaptor activity protein binding binding arrestin family protein binding GTPase regulator activity enzyme regulator activity enzyme activator activity GTPase activator activity molecular function activator activity nucleoside-triphosphatase regulator activity molecular function regulator activity angiotensin receptor binding signaling receptor binding G protein-coupled receptor binding molecular adaptor activity ubiquitin protein ligase binding ubiquitin-like protein ligase binding enzyme binding insulin-like growth factor receptor binding molecular function inhibitor activity enzyme inhibitor activity transcription coactivator activity transcription regulator activity transcription coregulator activity protein-macromolecule adaptor activity	interleukin-6 production multicellular organismal process regulation of cellular process negative regulation of biological process regulation of interleukin-6 production regulation of cytokine production cytokine production negative regulation of cellular process regulation of multicellular organismal process negative regulation of macromolecule metabolic process regulation of biosynthetic process regulation of biological process negative regulation of metabolic process biological regulation interleukin-6 production multicellular organismal process regulation of cellular process negative regulation of biological process regulation of interleukin-6 production regulation of cytokine production cytokine production negative regulation of cellular process regulation of multicellular organismal process negative regulation of macromolecule metabolic process regulation of biosynthetic process regulation of biological process negative regulation of metabolic process biological regulation negative regulation of cytokine production regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression negative regulation of interleukin-6 production negative regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process regulation of macromolecule biosynthetic process metabolic process cellular process macromolecule metabolic process negative regulation of multicellular organismal process regulation of metabolic process negative regulation of post-translational protein modification regulation of protein modification process regulation of protein ubiquitination regulation of primary metabolic process protein ubiquitination negative regulation of protein modification process protein metabolic process negative regulation of protein ubiquitination regulation of protein modification by small protein conjugation or removal protein modification process negative regulation of protein metabolic process negative regulation of protein modification by small protein conjugation or removal regulation of post-translational protein modification regulation of protein metabolic process primary metabolic process macromolecule modification post-translational protein modification protein modification by small protein conjugation protein modification by small protein conjugation or removal actomyosin structure organization actin cytoskeleton organization actin filament organization cellular component organization cellular component biogenesis organelle organization cellular component assembly actin filament bundle organization contractile actin filament bundle assembly actin filament-based process actin filament bundle assembly stress fiber assembly cellular component organization or biogenesis supramolecular fiber organization cytoskeleton organization catabolic process proteolysis involved in protein catabolic process protein catabolic process macromolecule catabolic process modification-dependent macromolecule catabolic process modification-dependent protein catabolic process proteolysis ubiquitin-dependent protein catabolic process muscle hypertrophy regulation of muscle adaptation system process positive regulation of cardiac muscle hypertrophy response to stimulus regulation of system process positive regulation of biological process striated muscle hypertrophy regulation of muscle system process muscle system process regulation of cardiac muscle hypertrophy regulation of muscle hypertrophy muscle adaptation regulation of response to stimulus positive regulation of muscle hypertrophy cardiac muscle hypertrophy positive regulation of multicellular organismal process negative regulation of interleukin-8 production interleukin-8 production regulation of interleukin-8 production positive regulation of DNA-templated transcription RNA metabolic process positive regulation of macromolecule biosynthetic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II positive regulation of biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process positive regulation of cellular process regulation of RNA biosynthetic process regulation of transcription by RNA polymerase II positive regulation of transcription by RNA polymerase II nucleobase-containing compound biosynthetic process nucleic acid metabolic process positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process regulation of DNA-templated transcription cellular response to stimulus negative adaptation of signaling pathway import into cell receptor internalization negative regulation of signaling signaling transport desensitization of G protein-coupled receptor signaling pathway regulation of signal transduction negative regulation of G protein-coupled receptor signaling pathway negative regulation of cell communication vesicle-mediated transport cell communication localization signal transduction regulation of G protein-coupled receptor signaling pathway G protein-coupled receptor internalization regulation of signaling negative regulation of response to stimulus negative regulation of signal transduction establishment of localization adaptation of signaling pathway regulation of cell communication G protein-coupled receptor signaling pathway receptor-mediated endocytosis endocytosis positive regulation of cell communication positive regulation of signal transduction intracellular signal transduction positive regulation of response to stimulus positive regulation of ERK1 and ERK2 cascade regulation of intracellular signal transduction intracellular signaling cassette positive regulation of MAPK cascade positive regulation of intracellular signal transduction regulation of MAPK cascade MAPK cascade ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade positive regulation of signaling establishment of protein localization nitrogen compound transport protein transport macromolecule localization intracellular protein localization regulation of localization regulation of cellular component organization positive regulation of cellular component organization regulation of receptor internalization positive regulation of endocytosis positive regulation of receptor-mediated endocytosis regulation of endocytosis regulation of transport regulation of receptor-mediated endocytosis regulation of vesicle-mediated transport positive regulation of receptor internalization positive regulation of transport small GTPase-mediated signal transduction regulation of small GTPase mediated signal transduction Rho protein signal transduction regulation of Rho protein signal transduction positive regulation of Rho protein signal transduction positive regulation of small GTPase mediated signal transduction proteasomal protein catabolic process proteasome-mediated ubiquitin-dependent protein catabolic process negative regulation of DNA-binding transcription factor activity negative regulation of NF-kappaB transcription factor activity negative regulation of molecular function regulation of molecular function regulation of DNA-binding transcription factor activity cell surface receptor signaling pathway Notch signaling pathway negative regulation of Notch signaling pathway regulation of Notch signaling pathway positive regulation of phosphorylation regulation of protein phosphorylation positive regulation of protein metabolic process positive regulation of phosphate metabolic process positive regulation of protein modification process phosphate-containing compound metabolic process positive regulation of protein phosphorylation phosphorus metabolic process protein phosphorylation positive regulation of phosphorus metabolic process phosphorylation regulation of phosphorus metabolic process regulation of phosphorylation	cell projection cellular anatomical structure pseudopodium plasma membrane bounded cell projection clathrin-coated pit membrane endomembrane system intracellular anatomical structure cytoplasm cytosol intracellular organelle organelle membraneless organelle intracellular membraneless organelle cell projection cellular anatomical structure pseudopodium plasma membrane bounded cell projection clathrin-coated pit membrane endomembrane system intracellular anatomical structure cytoplasm cytosol intracellular organelle organelle membraneless organelle intracellular membraneless organelle chromatin chromosome membrane-bounded organelle intracellular vesicle intracellular membrane-bounded organelle cytoplasmic vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane endocytic vesicle membrane vesicle organelle membrane endocytic vesicle vacuolar membrane lytic vacuole vacuole lytic vacuole membrane lysosomal membrane lysosome Golgi membrane Golgi apparatus cell periphery plasma membrane nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen nuclear body

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR000276	G protein-coupled receptor, rhodopsin-like	Family
B	IPR017452	GPCR, rhodopsin-like, 7TM	Domain
B	IPR000355	Chemokine receptor family	Family
B	IPR050119	C-C chemokine receptor type 1-9-like	Family
B	IPR002240	CC chemokine receptor 5	Family
A	IPR000698	Arrestin	Family
A	IPR014753	Arrestin, N-terminal	Homologous Superfamily
A	IPR014756	Immunoglobulin E-set	Homologous Superfamily
A	IPR011021	Arrestin-like, N-terminal	Domain
A	IPR014752	Arrestin-like, C-terminal	Homologous Superfamily
A	IPR017864	Arrestin, conserved site	Conserved Site
A	IPR011022	Arrestin C-terminal-like domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B	Pharos: P51681	hepatitis C virus infection type 1 diabetes mellitus 22 nephritis West Nile fever inflammatory bowel disease Kidney Failure, Acute psoriasis acquired metabolic disease schizophrenia tuberculosis autoimmune disease ulcerative colitis celiac disease dermatitis, atopic glioblastoma hepatitis C virus infection type 1 diabetes mellitus 22 nephritis West Nile fever inflammatory bowel disease Kidney Failure, Acute psoriasis acquired metabolic disease schizophrenia tuberculosis autoimmune disease ulcerative colitis celiac disease dermatitis, atopic glioblastoma hepatocellular carcinoma interstitial cystitis lung cancer osteosarcoma rheumatoid arthritis acute kidney failure Sjogren syndrome AIDS type 1 diabetes mellitus cancer chronic obstructive pulmonary disease diabetes mellitus head and neck cancer IgA glomerulonephritis invasive ductal breast carcinoma malignant glioma pilocytic astrocytoma sarcoidosis subependymal giant cell astrocytoma atopic eczema cutaneous lupus erythematosus West-Nile encephalitis ductal breast carcinoma in situ
A	Pharos: P49407	cirrhosis of liver pilocytic astrocytoma ulcerative colitis adrenal cortex carcinoma breast cancer Fibrosis, Liver large cell medulloblastoma lung carcinoma malignant glioma osteosarcoma astrocytic tumor glioblastoma lung adenocarcinoma major depressive disorder malignant mesothelioma cirrhosis of liver pilocytic astrocytoma ulcerative colitis adrenal cortex carcinoma breast cancer Fibrosis, Liver large cell medulloblastoma lung carcinoma malignant glioma osteosarcoma astrocytic tumor glioblastoma lung adenocarcinoma major depressive disorder malignant mesothelioma ovarian cancer tuberculosis atypical teratoid rhabdoid tumor ductal breast carcinoma in situ invasive ductal breast carcinoma lung cancer malignant ependymoma non-small cell lung carcinoma

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
B	SEP	Parent Component: SER RESID: AA0037 PSI-MOD : O-phospho-L-serine MOD:00046

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.