4HJ0 | pdb_00004hj0

Crystal structure of the human GIPr ECD in complex with Gipg013 Fab at 3-A resolution

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
F [auth C]	d4hj0c1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
F [auth C]	d4hj0c2	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C [auth P]	d4hj0p1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C [auth P]	d4hj0p2	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2 Family	Hormone receptor domain	8086310	4003045	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	FnI-like domain	8086311	3000979	SCOP2 (2022-06-29)
A	SCOP2B Superfamily	FnI-like domain	8086311	3000979	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F [auth C]		e4hj0C3	A: Fusion glycoprotein F2	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: VEGFR-1-like_Ig-like	F:	ECOD (20:10:01)
C [auth P]		e4hj0P1	A: EF-hand	X: EF-hand-related	H: EF-hand	T: Avidin	F:	ECOD (20:10:01)
E [auth D]		e4hj0D1	A: EF-hand	X: EF-hand-related	H: EF-hand	T: Avidin	F:	ECOD (20:10:01)
D [auth Q]		e4hj0Q1	A: EF-hand	X: EF-hand-related	H: EF-hand	T: SH3_1	F:	ECOD (20:10:01)
B		e4hj0B1	A: jelly-roll	X: Double-stranded beta-helix	H: Double-stranded beta-helix	T: zf-MYND	F:	ECOD (20:10:01)
A		e4hj0A1	A: EF-hand	X: EF-hand-related	H: EF-hand	T: Avidin	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
F [auth C]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C [auth P]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
E [auth D]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D [auth Q]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B	4.10.1240.10	Few Secondary Structures	Irregular	Hormone receptor fold	GPCR, family 2, extracellular hormone receptor domain	CATH (4.3.0)
A	4.10.1240.10	Few Secondary Structures	Irregular	Hormone receptor fold	GPCR, family 2, extracellular hormone receptor domain	CATH (4.3.0)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
C [auth P], F [auth C]	GIPG013 Fab, Antagonizing antibody to the GIP Receptor	VH-CH1	Homo sapiens (human)	IGHV1-6901, IGHV1-6912, IGHV1-6913, IGHV1-69D01, IGHJ401, IGHJ402, IGHJ403, IGHG103	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_LAMBDA	IMGT (202609-0)
D [auth Q], E [auth D]	GIPG013 Fab, Antagonizing antibody to the GIP Receptor	L-LAMBDA	Homo sapiens (human)	IGLV1-4401, IGLJ201, IGLJ301, IGLC201, IGLC202, IGLC304	V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA	IG	FAB-GAMMA-1_LAMBDA	IMGT (202609-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth P], F [auth C]	Heavy Chain	IGHV1	-	gastric inhibitory polypeptide receptor	SAbDab (2026-03-13)
D [auth Q], E [auth D]	Light Chain	IGLV1	Lambda	gastric inhibitory polypeptide receptor	SAbDab (2026-03-13)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02793	Hormone receptor domain (HRM)	Hormone receptor domain	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth P], F [auth C]	Gipg013 Fab, Antagonizing antibody to the GIP Receptor, Heavy chain	-	-	-
D [auth Q], E [auth D]	Gipg013 Fab, Antagonizing antibody to the GIP Receptor, Light chain	-	-	-
A, B	Gastric inhibitory polypeptide receptor	glucagon family peptide binding binding peptide hormone binding hormone binding molecular transducer activity G protein-coupled receptor activity transmembrane signaling receptor activity signaling receptor activity gastric inhibitory peptide receptor activity peptide receptor activity G protein-coupled peptide receptor activity	response to stimulus response to stress response to wounding response to axon injury positive regulation of cytosolic calcium ion concentration biological regulation regulation of biological quality response to metal ion response to chemical response to calcium ion cellular response to stimulus regulation of biological process regulation of cellular process signaling response to stimulus response to stress response to wounding response to axon injury positive regulation of cytosolic calcium ion concentration biological regulation regulation of biological quality response to metal ion response to chemical response to calcium ion cellular response to stimulus regulation of biological process regulation of cellular process signaling cell communication adenylate cyclase-modulating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway cellular process signal transduction negative adaptation of signaling pathway negative regulation of signaling negative regulation of biological process 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 negative regulation of cellular process regulation of G protein-coupled receptor signaling pathway regulation of signaling negative regulation of response to stimulus negative regulation of signal transduction regulation of response to stimulus adaptation of signaling pathway regulation of cell communication metabolic process generation of precursor metabolites and energy response to hexose response to monosaccharide response to carbohydrate response to glucose response to oxygen-containing compound gastric inhibitory peptide signaling pathway adenylate cyclase-activating G protein-coupled receptor signaling pathway developmental process multicellular organism development multicellular organismal process pancreas development endocrine system development anatomical structure development animal organ development endocrine pancreas development system development regulation of localization establishment of protein localization nitrogen compound transport regulation of hormone secretion regulation of protein localization regulation of peptide secretion transport hormone secretion protein localization to extracellular region localization peptide secretion regulation of secretion by cell secretion by cell signal release intracellular protein localization regulation of peptide hormone secretion regulation of transport secretion regulation of hormone levels regulation of peptide transport regulation of establishment of protein localization establishment of protein localization to extracellular region export from cell cell-cell signaling regulation of protein transport protein secretion establishment of localization regulation of protein secretion regulation of secretion peptide transport protein transport regulation of insulin secretion peptide hormone secretion macromolecule localization hormone transport insulin secretion cell surface receptor signaling pathway positive regulation of adenylate cyclase activity positive regulation of molecular function regulation of molecular function positive regulation of cyclase activity activation of adenylate cyclase activity regulation of adenylate cyclase activity regulation of catalytic activity positive regulation of catalytic activity positive regulation of lyase activity response to lipid response to fatty acid response to nutrient levels response to nutrient positive regulation of cell communication positive regulation of establishment of protein localization positive regulation of insulin secretion positive regulation of peptide hormone secretion positive regulation of protein localization positive regulation of biological process positive regulation of secretion by cell positive regulation of protein transport positive regulation of hormone secretion positive regulation of secretion positive regulation of cellular process positive regulation of peptide secretion positive regulation of protein secretion positive regulation of transport positive regulation of signaling	cellular anatomical structure membrane cell periphery plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR017983	GPCR, family 2, secretin-like, conserved site	Conserved Site
A, B	IPR050332	G-protein coupled receptor 2	Family
A, B	IPR036445	GPCR family 2, extracellular hormone receptor domain superfamily	Homologous Superfamily
A, B	IPR000832	GPCR, family 2, secretin-like	Family
A, B	IPR017981	GPCR, family 2-like, 7TM	Domain
A, B	IPR001879	GPCR, family 2, extracellular hormone receptor domain	Domain
A, B	IPR001749	GPCR, family 2, gastric inhibitory polypeptide receptor	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P48546	Body Weight non-small cell lung carcinoma heart disease type 2 diabetes mellitus lung carcinoma

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.