Annotations: 9LFC

Cryo-EM structure of human bradykinin receptor B1R bound to antagonist R715

External Resource: Annotation

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

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth C]	Heavy Chain	IGHV1	-	b1 bradykinin receptor,kappa-type opioid receptor	SAbDab (2026-05-29)

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	B1 bradykinin receptor,Kappa-type opioid receptor	peptide receptor activity molecular transducer activity G protein-coupled receptor activity G protein-coupled peptide receptor activity signaling receptor activity transmembrane signaling receptor activity bradykinin receptor activity binding peptide binding neuropeptide binding G protein-coupled opioid receptor activity dynorphin receptor activity protein binding receptor serine/threonine kinase 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 bradykinin receptor activity binding peptide binding neuropeptide binding G protein-coupled opioid receptor activity dynorphin receptor activity protein binding receptor serine/threonine kinase binding signaling receptor binding	positive regulation of cytosolic calcium ion concentration biological regulation regulation of biological quality positive regulation of locomotion regulation of biological process regulation of cell motility regulation of cellular process regulation of leukocyte migration positive regulation of biological process positive regulation of leukocyte migration positive regulation of cell migration leukocyte migration immune system process regulation of locomotion positive regulation of cytosolic calcium ion concentration biological regulation regulation of biological quality positive regulation of locomotion regulation of biological process regulation of cell motility regulation of cellular process regulation of leukocyte migration positive regulation of biological process positive regulation of leukocyte migration positive regulation of cell migration leukocyte migration immune system process regulation of locomotion positive regulation of cell motility regulation of cell migration cell migration cellular process regulation of immune system process cell motility positive regulation of immune system process locomotion positive regulation of cellular process response to stimulus response to mechanical stimulus response to abiotic stimulus response to external stimulus regulation of calcium ion transport regulation of localization positive regulation of cation transmembrane transport positive regulation of calcium ion transport transport monoatomic ion transmembrane transport regulation of monoatomic ion transmembrane transport calcium ion transport metal ion transport regulation of calcium ion transmembrane transport monoatomic cation transmembrane transport localization intercellular transport positive regulation of monoatomic ion transport positive regulation of calcium ion transmembrane transport positive regulation of transmembrane transport monoatomic ion transport positive regulation of monoatomic ion transmembrane transport positive regulation of release of sequestered calcium ion into cytosol monoatomic cation transport regulation of metal ion transport calcium ion transmembrane import into cytosol regulation of transport regulation of release of sequestered calcium ion into cytosol regulation of monoatomic ion transport establishment of localization transmembrane transport release of sequestered calcium ion into cytosol regulation of transmembrane transport positive regulation of transport regulation of monoatomic cation transmembrane transport calcium ion transmembrane transport defense response response to stress inflammatory response cellular response to stimulus signaling G protein-coupled receptor signaling pathway signal transduction cell communication regulation of growth regulation of cellular component organization negative regulation of biological process growth negative regulation of cell growth regulation of cell growth cell growth cellular component organization negative regulation of growth negative regulation of cellular process cellular component organization or biogenesis biological process involved in interspecies interaction between organisms response to lipid response to other organism response to oxygen-containing compound response to lipopolysaccharide response to biotic stimulus response to bacterium response to chemical response to external biotic stimulus response to molecule of bacterial origin multicellular organismal process system process circulatory system process regulation of blood pressure negative regulation of blood pressure blood circulation ovulation cycle rhythmic process estrous cycle reproductive process multicellular organismal reproductive process G protein-coupled opioid receptor signaling pathway sensory perception nervous system process phospholipase C-activating G protein-coupled receptor signaling pathway trans-synaptic signaling synaptic signaling anterograde trans-synaptic signaling cell-cell signaling chemical synaptic transmission behavior learning learning or memory cognition conditioned place preference associative learning defense response to virus response to virus response to acrylamide response to nitrogen compound neuropeptide signaling pathway locomotory behavior adult behavior behavioral response to cocaine response to cocaine response to alkaloid response to hormone response to endogenous stimulus response to estrogen immune response homeostatic process cellular response to glucose stimulus intracellular glucose homeostasis cellular response to oxygen-containing compound response to hexose cellular response to carbohydrate stimulus cellular response to chemical stimulus cellular homeostasis response to monosaccharide response to carbohydrate chemical homeostasis response to glucose glucose homeostasis carbohydrate homeostasis cellular response to hexose stimulus intracellular chemical homeostasis cellular response to monosaccharide stimulus maternal behavior parental behavior reproductive behavior negative regulation of luteinizing hormone secretion regulation of hormone secretion gonadotropin secretion negative regulation of signaling regulation of system process negative regulation of transport hormone secretion negative regulation of cell communication secretion by cell regulation of secretion by cell negative regulation of secretion regulation of luteinizing hormone secretion luteinizing hormone secretion signal release negative regulation of hormone secretion regulation of multicellular organismal process negative regulation of secretion by cell regulation of signaling secretion regulation of hormone levels regulation of gonadotropin secretion export from cell regulation of secretion endocrine process negative regulation of gonadotropin secretion hormone transport regulation of cell communication negative regulation of multicellular organismal process regulation of endocrine process eating behavior feeding behavior sensory perception of temperature stimulus cellular response to lipopolysaccharide cellular response to molecule of bacterial origin cellular response to biotic stimulus cellular response to lipid adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway adenylate cyclase-inhibiting opioid receptor signaling pathway adenylate cyclase-modulating G protein-coupled receptor signaling pathway nitrogen compound transport regulation of catecholamine secretion organic hydroxy compound transport positive regulation of secretion by cell positive regulation of amine transport positive regulation of secretion positive regulation of catecholamine secretion dopamine secretion positive regulation of dopamine secretion catecholamine secretion amine transport regulation of amine transport regulation of dopamine secretion regulation of body fluid levels secretion by tissue digestive system process regulation of digestive system process body fluid secretion digestion saliva secretion regulation of saliva secretion response to alcohol response to ethanol response to peptide hormone response to insulin positive regulation of cell communication positive regulation of signal transduction regulation of signal transduction p38MAPK cascade intracellular signal transduction positive regulation of response to stimulus regulation of intracellular signal transduction intracellular signaling cassette positive regulation of MAPK cascade positive regulation of intracellular signal transduction regulation of MAPK cascade positive regulation of p38MAPK cascade regulation of response to stimulus regulation of p38MAPK cascade MAPK cascade positive regulation of signaling regulation of eating behavior positive regulation of feeding behavior positive regulation of eating behavior regulation of behavior positive regulation of behavior positive regulation of multicellular organismal process regulation of feeding behavior sensory perception of pain response to nicotine regulation of potassium ion transport potassium ion transmembrane transport regulation of potassium ion transmembrane transport positive regulation of potassium ion transport positive regulation of potassium ion transmembrane transport potassium ion transport	cell periphery cellular anatomical structure plasma membrane membrane membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle endoplasmic reticulum cytoplasm intracellular membrane-bounded organelle endomembrane system postsynapse postsynaptic membrane cell periphery cellular anatomical structure plasma membrane membrane membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle endoplasmic reticulum cytoplasm intracellular membrane-bounded organelle endomembrane system postsynapse postsynaptic membrane synapse cell junction plasma membrane region synaptic membrane sarcolemma T-tubule somatodendritic compartment cell body perikaryon neuronal cell body cytosol presynapse presynaptic membrane cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection sarcoplasm sarcoplasmic reticulum intracellular vesicle transport vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane synaptic vesicle synaptic vesicle membrane vesicle transport vesicle exocytic vesicle membrane cytoplasmic vesicle membrane secretory vesicle organelle membrane exocytic vesicle mitochondrion nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen axon axon terminus distal axon neuron projection terminus
B [auth C]	Nanobody 6	-	-	-
C [auth B]	R715	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR000276	G protein-coupled receptor, rhodopsin-like	Family
A	IPR001186	Bradykinin receptor B1	Family
A	IPR000496	Bradykinin receptor family	Family
A	IPR050119	C-C chemokine receptor type 1-9-like	Family
A	IPR017452	GPCR, rhodopsin-like, 7TM	Domain
A	IPR001418	Opioid receptor	Family
A	IPR000276	G protein-coupled receptor, rhodopsin-like	Family
A	IPR000452	Kappa opioid receptor	Family
A	IPR017452	GPCR, rhodopsin-like, 7TM	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	: P41145	temporal lobe epilepsy Diabetes Mellitus, Experimental hereditary angioedema Pain opiate dependence cocaine dependence substance withdrawal syndrome visual epilepsy cocaine abuse pilocytic astrocytoma depressive disorder medulloblastoma obesity disorder pain agnosia schizophrenia temporal lobe epilepsy Diabetes Mellitus, Experimental hereditary angioedema Pain opiate dependence cocaine dependence substance withdrawal syndrome visual epilepsy cocaine abuse pilocytic astrocytoma depressive disorder medulloblastoma obesity disorder pain agnosia schizophrenia glioblastoma malignant ependymoma atypical teratoid rhabdoid tumor large cell medulloblastoma malignant glioma astrocytic tumor oligodendroglioma

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
C [auth B]	4J2
C [auth B]	ACE	: AA0041 , AA0042 , AA0043 , AA0044 , AA0045 , AA0046 , AA0049 , AA0050 , AA0051 , AA0052 , AA0053 , AA0054 , AA0354 : N-acetyl-L-alanine MOD:00050 , N-acetyl-L-aspartic acid MOD:00051 , N-acetyl-L-cysteine MOD:00052 , N-acetyl-S-archeol-cysteine MOD:00897 , N-acetyl-L-glutamic acid MOD:00053 , N-acetyl-L-glutamine MOD:00054 , N-acetylglycine MOD:00055 , N-acetyl-L-methionine MOD:00058 , N-acetyl-L-proline MOD:00059 , N-acetyl-L-serine MOD:00060 , N,O-diacetylated L-serine MOD:00648 , N-acetyl-L-threonine MOD:00061 , N-acetyl-L-tyrosine MOD:00062 , N-acetyl-L-valine MOD:00063 , N2-acetyl-L-arginine MOD:00359

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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.