Annotations: 8Y69

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth E], G [auth I]	Heavy Chain	IGHV1	-	leucine-rich repeat-containing g-protein coupled receptor4	SAbDab (2025-12-19)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, E [auth D]	PF13855	Leucine rich repeat (LRR_8)	Leucine rich repeat	-	Repeat
A, E [auth D]	PF01462	Leucine rich repeat N-terminal domain (LRRNT)	Leucine rich repeat N-terminal domain	-	Family
A, E [auth D]	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
B [auth C], F [auth H]	PF18212	ZNRF-3 Ectodomain (ZNRF_3_ecto)	ZNRF-3 Ectodomain	This domain is found in ZNRF-3 protein present in Danio rerio. ZNRF-3 is a transmembrane E3 ubiquitin ligase that antagonizes Wnt signalling, the signalling system used to mediate Rspo protein actions. ZNFR3 and RNF43, alongside the Rspo proteins, ha ...	This domain is found in ZNRF-3 protein present in Danio rerio. ZNRF-3 is a transmembrane E3 ubiquitin ligase that antagonizes Wnt signalling, the signalling system used to mediate Rspo protein actions. ZNFR3 and RNF43, alongside the Rspo proteins, have emerged as a system with therapeutic potential for a number of pathological processes. This domain is known as the ectodomain [1].	Domain
D [auth G], H [auth J]	PF15913	Furin-like repeat, cysteine-rich (Furin-like_2)	Furin-like repeat, cysteine-rich	The furin-like cysteine rich region has been found in a variety of proteins from eukaryotes that are involved in the mechanism of signal transduction by receptor tyrosine kinases, which involves receptor aggregation.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, E [auth D]	Leucine-rich repeat-containing G-protein coupled receptor 4	molecular transducer activity G protein-coupled receptor activity transmembrane signaling receptor activity signaling receptor activity protein-hormone receptor activity	multicellular organismal process tissue remodeling bone remodeling developmental process epithelium development cell population proliferation tube development morphogenesis of an epithelium tissue development renal system development epithelial cell proliferation involved in renal tubule morphogenesis tissue morphogenesis anatomical structure morphogenesis multicellular organism development multicellular organismal process tissue remodeling bone remodeling developmental process epithelium development cell population proliferation tube development morphogenesis of an epithelium tissue development renal system development epithelial cell proliferation involved in renal tubule morphogenesis tissue morphogenesis anatomical structure morphogenesis multicellular organism development tube morphogenesis anatomical structure development renal tubule development cellular process epithelial tube morphogenesis epithelial cell proliferation renal tubule morphogenesis system development cellular developmental process ossification cell differentiation osteoblast differentiation cellular response to stimulus positive regulation of response to biotic stimulus regulation of cellular process pattern recognition receptor signaling pathway response to stimulus toll-like receptor signaling pathway negative regulation of biological process regulation of signal transduction response to biotic stimulus cell communication immune response-activating signaling pathway positive regulation of immune response regulation of immune system process signal transduction positive regulation of immune system process innate immune response-activating signaling pathway regulation of biological process immune response response to other organism regulation of innate immune response response to external stimulus regulation of response to stimulus defense response to other organism regulation of pattern recognition receptor signaling pathway positive regulation of defense response activation of innate immune response regulation of immune response regulation of toll-like receptor signaling pathway activation of immune response regulation of defense response regulation of response to biotic stimulus biological process involved in interspecies interaction between organisms regulation of response to external stimulus signaling negative regulation of signaling positive regulation of biological process negative regulation of cell communication positive regulation of response to stimulus positive regulation of response to external stimulus immune response-regulating signaling pathway regulation of response to stress response to stress innate immune response negative regulation of cellular process response to external biotic stimulus regulation of signaling positive regulation of innate immune response defense response negative regulation of response to stimulus biological regulation defense response to symbiont negative regulation of signal transduction negative regulation of toll-like receptor signaling pathway negative regulation of immune system process immune system process regulation of cell communication spermatogenesis sexual reproduction reproductive process multicellular organismal reproductive process developmental process involved in reproduction male gamete generation gamete generation bone mineralization animal organ development biomineral tissue development mesonephric epithelium development kidney epithelium development branching morphogenesis of an epithelial tube nephron tubule morphogenesis regulation of kidney development regulation of branching involved in ureteric bud morphogenesis positive regulation of developmental process animal organ morphogenesis nephron development regulation of morphogenesis of a branching structure regulation of animal organ morphogenesis positive regulation of multicellular organismal process mesonephric tubule development regulation of developmental process nephron morphogenesis nephron epithelium morphogenesis nephron tubule development ureteric bud morphogenesis positive regulation of morphogenesis of an epithelium branching involved in ureteric bud morphogenesis regulation of morphogenesis of an epithelium regulation of multicellular organismal process regulation of anatomical structure morphogenesis nephron epithelium development ureteric bud development mesonephros development kidney morphogenesis morphogenesis of a branching structure positive regulation of branching involved in ureteric bud morphogenesis mesonephric tubule morphogenesis kidney development morphogenesis of a branching epithelium digestive system development digestive tract development epidermis development molting cycle process hair cycle skin development skin epidermis development hair follicle development molting cycle hair cycle process genitalia development reproductive system development sex differentiation male sex differentiation male genitalia development reproductive structure development multicellular organismal-level homeostasis homeostatic process homeostasis of number of cells intestinal stem cell homeostasis regulation of biosynthetic process rhythmic process circadian regulation of gene expression circadian rhythm regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression biosynthetic process regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process regulation of metabolic process cytokine production regulation of cytokine production negative regulation of macromolecule metabolic process negative regulation of metabolic process negative regulation of cytokine production negative regulation of gene expression negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process negative regulation of multicellular organismal process metanephric tubule morphogenesis metanephric epithelium development metanephros development metanephros morphogenesis metanephric nephron tubule morphogenesis metanephric nephron development metanephric nephron epithelium development metanephric nephron tubule development metanephric nephron morphogenesis metanephric tubule development cell surface receptor signaling pathway Wnt signaling pathway positive regulation of cell communication positive regulation of signal transduction regulation of canonical Wnt signaling pathway canonical Wnt signaling pathway positive regulation of Wnt signaling pathway positive regulation of cellular process positive regulation of canonical Wnt signaling pathway regulation of Wnt signaling pathway positive regulation of signaling negative regulation of cold-induced thermogenesis adaptive thermogenesis regulation of cold-induced thermogenesis cold-induced thermogenesis temperature homeostasis metanephric glomerulus development glomerulus development	cell periphery cellular anatomical structure plasma membrane membrane
B [auth C], F [auth H]	E3 ubiquitin-protein ligase ZNRF3	aminoacyltransferase activity ubiquitin-like protein transferase activity catalytic activity, acting on a protein acyltransferase activity transferase activity catalytic activity ubiquitin-protein transferase activity cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding aminoacyltransferase activity ubiquitin-like protein transferase activity catalytic activity, acting on a protein acyltransferase activity transferase activity catalytic activity ubiquitin-protein transferase activity cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding ubiquitin-like protein ligase activity ubiquitin protein ligase activity protein binding signaling receptor binding G protein-coupled receptor binding frizzled binding	catabolic process proteolysis involved in protein catabolic process primary metabolic process protein catabolic process macromolecule catabolic process modification-dependent macromolecule catabolic process modification-dependent protein catabolic process proteolysis ubiquitin-dependent protein catabolic process metabolic process cellular process macromolecule metabolic process protein metabolic process developmental process catabolic process proteolysis involved in protein catabolic process primary metabolic process protein catabolic process macromolecule catabolic process modification-dependent macromolecule catabolic process modification-dependent protein catabolic process proteolysis ubiquitin-dependent protein catabolic process metabolic process cellular process macromolecule metabolic process protein metabolic process developmental process multicellular organism development multicellular organismal process limb development appendage development anatomical structure development stem cell proliferation cell population proliferation regulation of Wnt signaling pathway, planar cell polarity pathway cellular response to stimulus regulation of biological process regulation of signaling regulation of cellular process regulation of Wnt signaling pathway cell surface receptor signaling pathway response to stimulus signaling biological regulation regulation of signal transduction Wnt signaling pathway, planar cell polarity pathway regulation of non-canonical Wnt signaling pathway cell communication regulation of response to stimulus regulation of cell communication non-canonical Wnt signaling pathway signal transduction Wnt signaling pathway receptor catabolic process negative regulation of signaling negative regulation of biological process negative regulation of cell communication negative regulation of Wnt signaling pathway receptor metabolic process negative regulation of cellular process negative regulation of response to stimulus negative regulation of signal transduction Wnt receptor catabolic process regulation of canonical Wnt signaling pathway canonical Wnt signaling pathway negative regulation of canonical Wnt signaling pathway protein ubiquitination macromolecule modification post-translational protein modification protein modification process protein modification by small protein conjugation protein modification by small protein conjugation or removal negative regulation of non-canonical Wnt signaling pathway	cell periphery cellular anatomical structure plasma membrane membrane
C [auth E], G [auth I]	MB52	-	-	-
D [auth G], H [auth J]	R-spondin-2	protein binding binding signaling receptor binding BMP receptor binding receptor serine/threonine kinase binding transmembrane receptor protein serine/threonine kinase binding heparin binding glycosaminoglycan binding carbohydrate derivative binding sulfur compound binding	developmental process multicellular organismal process regulation of biological process regulation of animal organ morphogenesis regulation of developmental process regulation of odontogenesis of dentin-containing tooth negative regulation of developmental process regulation of odontogenesis odontogenesis of dentin-containing tooth odontogenesis animal organ development biological regulation negative regulation of biological process negative regulation of odontogenesis anatomical structure morphogenesis developmental process multicellular organismal process regulation of biological process regulation of animal organ morphogenesis regulation of developmental process regulation of odontogenesis of dentin-containing tooth negative regulation of developmental process regulation of odontogenesis odontogenesis of dentin-containing tooth odontogenesis animal organ development biological regulation negative regulation of biological process negative regulation of odontogenesis anatomical structure morphogenesis negative regulation of odontogenesis of dentin-containing tooth anatomical structure development animal organ morphogenesis negative regulation of animal organ morphogenesis regulation of multicellular organismal process negative regulation of multicellular organismal process regulation of anatomical structure morphogenesis cellular developmental process ossification cell differentiation cellular process osteoblast differentiation lung growth developmental growth tube development growth respiratory tube development organ growth multicellular organism development lung development respiratory system development system development trachea cartilage morphogenesis connective tissue development trachea cartilage development trachea morphogenesis tissue development tissue morphogenesis skeletal system development trachea development cartilage morphogenesis cartilage development limb development appendage development embryonic forelimb morphogenesis embryonic limb morphogenesis embryonic morphogenesis embryonic appendage morphogenesis embryo development forelimb morphogenesis appendage morphogenesis limb morphogenesis bone mineralization biomineral tissue development cellular response to stimulus regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling canonical Wnt signaling pathway cell communication signal transduction Wnt signaling pathway branching morphogenesis of an epithelial tube tube morphogenesis lung morphogenesis epithelial tube morphogenesis epithelium development morphogenesis of an epithelium morphogenesis of a branching structure epithelial tube branching involved in lung morphogenesis morphogenesis of a branching epithelium embryonic hindlimb morphogenesis hindlimb morphogenesis positive regulation of cell communication positive regulation of signal transduction positive regulation of biological process regulation of signal transduction positive regulation of response to stimulus positive regulation of Wnt signaling pathway positive regulation of cellular process regulation of signaling regulation of Wnt signaling pathway regulation of response to stimulus regulation of cell communication positive regulation of signaling regulation of canonical Wnt signaling pathway positive regulation of canonical Wnt signaling pathway dopaminergic neuron differentiation nervous system development generation of neurons neurogenesis neuron differentiation	cell surface cellular anatomical structure extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, E [auth D]	IPR000372	Leucine-rich repeat N-terminal domain	Domain
A, E [auth D]	IPR003591	Leucine-rich repeat, typical subtype	Repeat
A, E [auth D]	IPR000276	G protein-coupled receptor, rhodopsin-like	Family
A, E [auth D]	IPR002131	Glycoprotein hormone receptor family	Family
A, E [auth D]	IPR017452	GPCR, rhodopsin-like, 7TM	Domain
A, E [auth D]	IPR001611	Leucine-rich repeat	Repeat
A, E [auth D]	IPR032675	Leucine-rich repeat domain superfamily	Homologous Superfamily
B [auth C], F [auth H]	IPR051073	ZNRF3/Arkadia E3 ubiquitin-protein ligases	Family
B [auth C], F [auth H]	IPR013083	Zinc finger, RING/FYVE/PHD-type	Homologous Superfamily
B [auth C], F [auth H]	IPR040700	ZNRF-3, ectodomain	Domain
B [auth C], F [auth H]	IPR045903	E3 ubiquitin-protein ligase ZNRF3, zinc finger, RING-type	Domain
B [auth C], F [auth H]	IPR001841	Zinc finger, RING-type	Domain
D [auth G], H [auth J]	IPR000884	Thrombospondin type-1 (TSP1) repeat	Repeat
D [auth G], H [auth J]	IPR043601	R-spondin, Fu-CRD domain	Domain
D [auth G], H [auth J]	IPR036383	Thrombospondin type-1 repeat superfamily	Homologous Superfamily
D [auth G], H [auth J]	IPR051514	R-spondin domain-containing protein	Family
D [auth G], H [auth J]	IPR006212	Furin-like repeat	Repeat
D [auth G], H [auth J]	IPR009030	Growth factor receptor cysteine-rich domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, E [auth D]	Pharos: Q9BXB1	BONE MINERAL DENSITY QUANTITATIVE TRAIT LOCUS 17 adenoma glioblastoma lung adenocarcinoma malignant glioma obesity disorder psoriasis adrenal cortex carcinoma breast cancer interstitial cystitis lung cancer malignant mesothelioma osteoporosis spina bifida atypical teratoid rhabdoid tumor BONE MINERAL DENSITY QUANTITATIVE TRAIT LOCUS 17 adenoma glioblastoma lung adenocarcinoma malignant glioma obesity disorder psoriasis adrenal cortex carcinoma breast cancer interstitial cystitis lung cancer malignant mesothelioma osteoporosis spina bifida atypical teratoid rhabdoid tumor breast carcinoma large cell medulloblastoma lung carcinoma non-small cell lung carcinoma osteosarcoma
B [auth C], F [auth H]	Pharos: Q9ULT6	adrenal cortex carcinoma pancreatic neoplasm subependymal giant cell astrocytoma adrenal carcinoma colorectal adenocarcinoma interstitial cystitis malignant ependymoma medulloblastoma open-angle glaucoma pancreatic intraductal papillary-mucinous carcinoma Pick disease exocrine pancreatic carcinoma lung adenocarcinoma Malignant neoplasm of pancreas nasopharyngeal carcinoma adrenal cortex carcinoma pancreatic neoplasm subependymal giant cell astrocytoma adrenal carcinoma colorectal adenocarcinoma interstitial cystitis malignant ependymoma medulloblastoma open-angle glaucoma pancreatic intraductal papillary-mucinous carcinoma Pick disease exocrine pancreatic carcinoma lung adenocarcinoma Malignant neoplasm of pancreas nasopharyngeal carcinoma osteosarcoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia squamous cell carcinoma carcinoma of esophagus gastric carcinoma lung carcinoma malignant pancreatic neoplasm non-alcoholic fatty liver disease ovarian cancer
D [auth G], H [auth J]	Pharos: Q6UXX9	androgenetic alopecia humerofemoral hypoplasia with radiotibial ray deficiency malignant ependymoma oligodendroglioma pilocytic astrocytoma astrocytic tumor large cell medulloblastoma malignant glioma ossification of the posterior longitudinal ligament of the spine primitive neuroectodermal tumor glioblastoma lung adenocarcinoma medulloblastoma Pick disease tetraamelia syndrome 2

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B [auth C], D [auth G], E [auth D], F [auth H] A, B [auth C], D [auth G], E [auth D], F [auth H], H [auth J]	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.