8TH4 | pdb_00008th4

Structure of AT118-L Nanobody Antagonist in Complex with the Angiotensin II Type I Receptor and Losartan

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Membrane Protein Annotation: PDBTM

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Cytochromes	8057879	3001526	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	G protein-coupled receptor-like	8091194	3000473	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)
D [auth B]	BRCT_2	e8th4B01	A: a/b three-layered sandwiches	X: ATP-grasp_6	H: ATP-grasp_6	T: ATP-grasp_6	F: BRCT_2	ECOD (v294.1)
A	BRCT_2	e8th4A01	A: a/b three-layered sandwiches	X: ATP-grasp_6	H: ATP-grasp_6	T: ATP-grasp_6	F: BRCT_2	ECOD (v294.1)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
D [auth B]	Heavy Chain	IGHV3	-	type-1 angiotensin ii receptor soluble cytochrome b562complex	SAbDab (2026-04-10)
C [auth D]	Light Chain	IGKV1	Kappa	type-1 angiotensin ii receptor soluble cytochrome b562complex	SAbDab (2026-04-10)
B [auth C]	Heavy Chain	IGHV3	-	type-1 angiotensin ii receptor soluble cytochrome b562complex	SAbDab (2026-04-10)

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
D [auth B]	AT118-L Nanobody	-	-	-
C [auth D]	BAG2 Anti-BRIL Fab Light Chain	-	-	-
B [auth C]	BAG2 Anti-BRIL Fab Heavy Chain	-	-	-
A	Type-1 angiotensin II receptor Soluble cytochrome b562 complex	binding tetrapyrrole binding heme binding electron transfer activity cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding peptide receptor activity molecular transducer activity G protein-coupled receptor activity G protein-coupled peptide receptor activity binding tetrapyrrole binding heme binding electron transfer activity cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding peptide receptor activity molecular transducer activity G protein-coupled receptor activity G protein-coupled peptide receptor activity signaling receptor activity transmembrane signaling receptor activity angiotensin receptor activity angiotensin type I receptor activity protein heterodimerization activity protein binding protein dimerization activity angiotensin type II receptor activity signaling receptor binding bradykinin receptor binding G protein-coupled receptor binding	electron transport chain metabolic process cellular process generation of precursor metabolites and energy positive regulation of cytosolic calcium ion concentration biological regulation regulation of biological quality plasma lipoprotein particle organization multicellular organismal process regulation of biological process low-density lipoprotein particle remodeling protein-containing complex organization protein-containing complex remodeling protein-lipid complex organization electron transport chain metabolic process cellular process generation of precursor metabolites and energy positive regulation of cytosolic calcium ion concentration biological regulation regulation of biological quality plasma lipoprotein particle organization multicellular organismal process regulation of biological process low-density lipoprotein particle remodeling protein-containing complex organization protein-containing complex remodeling protein-lipid complex organization plasma lipoprotein particle remodeling regulation of plasma lipoprotein particle levels cellular component organization protein-lipid complex remodeling cellular component organization or biogenesis cellular response to stimulus cellular response to nitrogen compound phospholipase C-activating angiotensin-activated signaling pathway response to angiotensin regulation of cellular process response to stimulus signaling response to peptide hormone angiotensin-activated signaling pathway cellular response to angiotensin cell communication phospholipase C-activating G protein-coupled receptor signaling pathway cellular response to endogenous stimulus response to hormone signal transduction cellular response to hormone stimulus response to endogenous stimulus response to oxygen-containing compound cellular response to peptide hormone stimulus response to nitrogen compound cellular response to oxygen-containing compound cellular response to chemical stimulus response to chemical G protein-coupled receptor signaling pathway regulation of defense response regulation of response to external stimulus defense response positive regulation of biological process response to external stimulus regulation of inflammatory response positive regulation of response to stimulus positive regulation of response to external stimulus positive regulation of inflammatory response regulation of response to stimulus regulation of response to stress response to stress positive regulation of defense response inflammatory response regulation of blood vessel endothelial cell proliferation involved in sprouting angiogenesis positive regulation of cell population proliferation endothelial cell proliferation angiogenesis multicellular organism development tube morphogenesis positive regulation of endothelial cell proliferation anatomical structure development epithelial cell proliferation positive regulation of cellular process blood vessel development system development developmental process positive regulation of blood vessel endothelial cell proliferation involved in sprouting angiogenesis cell population proliferation blood vessel morphogenesis tube development blood vessel endothelial cell proliferation involved in sprouting angiogenesis positive regulation of epithelial cell proliferation sprouting angiogenesis vasculature development circulatory system development anatomical structure morphogenesis regulation of endothelial cell proliferation regulation of cell population proliferation anatomical structure formation involved in morphogenesis regulation of epithelial cell proliferation biological process involved in interspecies interaction between organisms symbiont entry into host cell viral process symbiont entry into host viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction regulation of localization system process renal sodium excretion inorganic ion homeostasis regulation of renal system process transport homeostatic process regulation of system process localization monoatomic ion homeostasis regulation of multicellular organismal process monoatomic cation homeostasis excretion renal system process sodium ion homeostasis regulation of transport secretion renal tubular secretion establishment of localization regulation of secretion regulation of renal sodium excretion chemical homeostasis regulation of excretion regulation of growth regulation of cellular component organization growth regulation of cell growth cell growth regulation of cholesterol metabolic process steroid metabolic process regulation of lipid metabolic process sterol metabolic process cholesterol metabolic process alcohol metabolic process regulation of primary metabolic process positive regulation of metabolic process regulation of small molecule metabolic process positive regulation of lipid metabolic process small molecule metabolic process regulation of steroid metabolic process primary metabolic process secondary alcohol metabolic process positive regulation of cholesterol metabolic process positive regulation of steroid metabolic process positive regulation of small molecule metabolic process regulation of metabolic process lipid metabolic process regulation of tube diameter regulation of tube size circulatory system process regulation of blood circulation regulation of vasoconstriction vascular process in circulatory system blood vessel diameter maintenance blood circulation vasoconstriction regulation of anatomical structure size intracellular signal transduction calcium-mediated signaling intracellular signaling cassette regulation of developmental process cellular developmental process macrophage derived foam cell differentiation regulation of cell differentiation positive regulation of developmental process foam cell differentiation positive regulation of cell differentiation cell differentiation regulation of macrophage derived foam cell differentiation positive regulation of macrophage derived foam cell differentiation regulation of systemic arterial blood pressure by renin-angiotensin regulation of systemic arterial blood pressure by hormone regulation of blood volume by renin-angiotensin regulation of aldosterone secretion regulation of steroid hormone secretion aldosterone secretion mineralocorticoid secretion regulation of hormone levels lipid transport regulation of corticosteroid hormone secretion endocrine hormone secretion lipid export from cell renin-angiotensin regulation of aldosterone production regulation of mineralocorticoid secretion regulation of endocrine process corticosteroid hormone secretion regulation of systemic arterial blood pressure mediated by a chemical signal regulation of hormone secretion steroid hormone secretion regulation of lipid transport organic hydroxy compound transport hormone secretion secretion by cell regulation of secretion by cell signal release renal system process involved in regulation of systemic arterial blood pressure regulation of signaling regulation of blood pressure lipid localization export from cell cell-cell signaling regulation of systemic arterial blood pressure endocrine process regulation of lipid localization macromolecule localization hormone transport regulation of cell communication reactive oxygen species metabolic process positive regulation of reactive oxygen species metabolic process regulation of reactive oxygen species metabolic process cell chemotaxis chemotaxis taxis cell migration cell motility locomotion maintenance of blood vessel diameter homeostasis by renin-angiotensin small GTPase-mediated signal transduction Rho protein signal transduction animal organ development kidney development renal system development	cellular anatomical structure extracellular region periplasmic space membrane cell periphery plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR010980	Cytochrome c/b562	Homologous Superfamily
A	IPR009155	Cytochrome b562	Family
A	IPR000190	Angiotensin II receptor type 1	Family
A	IPR000276	G protein-coupled receptor, rhodopsin-like	Family
A	IPR017452	GPCR, rhodopsin-like, 7TM	Domain
A	IPR050119	C-C chemokine receptor type 1-9-like	Family
A	IPR000248	Angiotensin II receptor family	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P30556	hypertensive disorder kidney disease abdominal aortic aneurysm pancreatic ductal adenocarcinoma patent ductus arteriosus diabetic retinopathy pituitary gland adenoma Allanson Pantzar McLeod syndrome congestive heart failure pituitary adenocarcinoma proteinuria renal tubular dysgenesis of genetic origin essential hypertension psoriasis lung adenocarcinoma hypertensive disorder kidney disease abdominal aortic aneurysm pancreatic ductal adenocarcinoma patent ductus arteriosus diabetic retinopathy pituitary gland adenoma Allanson Pantzar McLeod syndrome congestive heart failure pituitary adenocarcinoma proteinuria renal tubular dysgenesis of genetic origin essential hypertension psoriasis lung adenocarcinoma malignant colon neoplasm nephrosclerosis ovarian cancer cutaneous lupus erythematosus pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia essential hypertension, genetic pituitary tumor heart disease renal tubular dysgenesis inborn carbohydrate metabolic disorder lung cancer atopic eczema malignant mesothelioma non-small cell lung carcinoma coronary artery disease ductal breast carcinoma in situ pituitary cancer glioblastoma heart failure invasive ductal breast carcinoma lung carcinoma breast carcinoma medulloblastoma congenital anomaly of kidney and urinary tract osteosarcoma COVID-19 pancreatic intraductal papillary-mucinous carcinoma

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