Annotations: 8XQP

Structure of human class T GPCR TAS2R14-Gustducin complex with Aristolochic acid A.

External Resource: Annotation

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

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	Transducin (heterotrimeric G protein), gamma chain	8070798	3001771	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)
E [auth S]	WD40	e8xqpS1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)
D [auth R]	WD40	e8xqpR1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)
C	WD40	e8xqpC1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)
B	WD40	e8xqpB1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
D [auth R]	PF05296	Taste receptor protein (TAS2R) (TAS2R)	Taste receptor protein (TAS2R)	-	Family
A	PF00503	G-protein alpha subunit (G-alpha)	G-protein alpha subunit	G proteins couple receptors of extracellular signals to intracellular signaling pathways. The G protein alpha subunit binds guanyl nucleotide and is a weak GTPase. A set of residues that are unique to G-alpha as compared to its ancestor the Arf-like ...	G proteins couple receptors of extracellular signals to intracellular signaling pathways. The G protein alpha subunit binds guanyl nucleotide and is a weak GTPase. A set of residues that are unique to G-alpha as compared to its ancestor the Arf-like family form a ring of residues centered on the nucleotide binding site [3]. A Ggamma is found fused to an inactive Galpha in the Dictyostelium protein gbqA [3].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E [auth S]	scFv16	-	-	-
D [auth R]	Exo-alpha-sialidase,Taste receptor type 2 member 14,LgBiT	cation binding ion binding binding metal ion binding small molecule binding hydrolase activity, acting on glycosyl bonds alpha-sialidase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity exo-alpha-sialidase activity catalytic activity taste receptor activity molecular transducer activity transmembrane signaling receptor activity cation binding ion binding binding metal ion binding small molecule binding hydrolase activity, acting on glycosyl bonds alpha-sialidase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity exo-alpha-sialidase activity catalytic activity taste receptor activity molecular transducer activity transmembrane signaling receptor activity signaling receptor activity bitter taste receptor activity G protein-coupled receptor activity	sphingolipid catabolic process ceramide metabolic process ganglioside catabolic process carbohydrate derivative catabolic process glycosphingolipid catabolic process lipid catabolic process catabolic process glycolipid metabolic process glycosphingolipid metabolic process liposaccharide metabolic process carbohydrate derivative metabolic process primary metabolic process sphingolipid metabolic process glycolipid catabolic process ceramide catabolic process sphingolipid catabolic process ceramide metabolic process ganglioside catabolic process carbohydrate derivative catabolic process glycosphingolipid catabolic process lipid catabolic process catabolic process glycolipid metabolic process glycosphingolipid metabolic process liposaccharide metabolic process carbohydrate derivative metabolic process primary metabolic process sphingolipid metabolic process glycolipid catabolic process ceramide catabolic process metabolic process cellular process ganglioside metabolic process lipid metabolic process carbohydrate metabolic process oligosaccharide catabolic process oligosaccharide metabolic process carbohydrate catabolic process cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation G protein-coupled receptor signaling pathway signal transduction cell communication multicellular organismal process system process nervous system process detection of chemical stimulus involved in sensory perception of bitter taste detection of chemical stimulus involved in sensory perception of taste detection of stimulus sensory perception of chemical stimulus sensory perception sensory perception of taste response to chemical detection of chemical stimulus sensory perception of bitter taste detection of stimulus involved in sensory perception detection of chemical stimulus involved in sensory perception	cellular anatomical structure membrane intracellular anatomical structure cytoplasm cell periphery plasma membrane
C	Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	protein binding binding G-protein beta-subunit binding	fibroblast proliferation cell population proliferation cellular process cellular response to nitrogen compound cellular response to stimulus response to dopamine regulation of cellular process response to stimulus signaling cellular response to dopamine response to monoamine cell communication response to catecholamine adenylate cyclase-activating dopamine receptor signaling pathway fibroblast proliferation cell population proliferation cellular process cellular response to nitrogen compound cellular response to stimulus response to dopamine regulation of cellular process response to stimulus signaling cellular response to dopamine response to monoamine cell communication response to catecholamine adenylate cyclase-activating dopamine receptor signaling pathway cellular response to catecholamine stimulus signal transduction regulation of biological process G protein-coupled dopamine receptor signaling pathway biological regulation response to oxygen-containing compound response to nitrogen compound adenylate cyclase-activating G protein-coupled receptor signaling pathway cellular response to oxygen-containing compound cellular response to chemical stimulus cellular response to monoamine stimulus response to chemical adenylate cyclase-modulating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway response to ketone response to prostaglandin response to lipid response to endogenous stimulus response to alcohol cellular response to prostaglandin stimulus cellular response to endogenous stimulus cellular response to prostaglandin E stimulus cellular response to alcohol response to hormone cellular response to lipid response to prostaglandin E cellular response to ketone cellular response to hormone stimulus	cellular anatomical structure membrane protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane plasma membrane membrane protein complex heterotrimeric G-protein complex side of membrane cell periphery cytoplasmic side of plasma membrane GTPase complex cellular anatomical structure membrane protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane plasma membrane membrane protein complex heterotrimeric G-protein complex side of membrane cell periphery cytoplasmic side of plasma membrane GTPase complex extrinsic component of membrane extrinsic component of cytoplasmic side of plasma membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle synapse cell junction
B	Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	protein binding binding enzyme binding GTPase binding protein-containing complex binding pyrophosphatase activity GTPase activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity signaling receptor complex adaptor activity protein-macromolecule adaptor activity protein binding binding enzyme binding GTPase binding protein-containing complex binding pyrophosphatase activity GTPase activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity signaling receptor complex adaptor activity protein-macromolecule adaptor activity molecular adaptor activity signaling adaptor activity	multicellular organismal process system process sensory perception of chemical stimulus sensory perception nervous system process sensory perception of taste developmental process sensory organ development eye development animal organ development retina development in camera-type eye visual system development multicellular organism development camera-type eye development multicellular organismal process system process sensory perception of chemical stimulus sensory perception nervous system process sensory perception of taste developmental process sensory organ development eye development animal organ development retina development in camera-type eye visual system development multicellular organism development camera-type eye development anatomical structure development sensory system development system development cell population proliferation cellular process cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation signal transduction cell communication response to ketone response to prostaglandin response to lipid response to endogenous stimulus response to alcohol cellular response to prostaglandin stimulus response to oxygen-containing compound cellular response to oxygen-containing compound cellular response to endogenous stimulus cellular response to prostaglandin E stimulus cellular response to chemical stimulus cellular response to alcohol response to hormone response to chemical cellular response to lipid response to prostaglandin E cellular response to ketone cellular response to hormone stimulus small GTPase-mediated signal transduction Ras protein signal transduction intracellular signal transduction intracellular signaling cassette phospholipase C-activating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway cellular response to nitrogen compound response to dopamine cellular response to dopamine response to monoamine response to catecholamine adenylate cyclase-activating dopamine receptor signaling pathway cellular response to catecholamine stimulus G protein-coupled dopamine receptor signaling pathway response to nitrogen compound adenylate cyclase-activating G protein-coupled receptor signaling pathway cellular response to monoamine stimulus adenylate cyclase-modulating G protein-coupled receptor signaling pathway synaptic signaling cellular response to acetylcholine cell-cell signaling acetylcholine receptor signaling pathway postsynaptic signal transduction G protein-coupled acetylcholine receptor signaling pathway response to acetylcholine	cellular anatomical structure membrane protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane plasma membrane membrane protein complex heterotrimeric G-protein complex side of membrane cell periphery cytoplasmic side of plasma membrane GTPase complex cellular anatomical structure membrane protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane plasma membrane membrane protein complex heterotrimeric G-protein complex side of membrane cell periphery cytoplasmic side of plasma membrane GTPase complex extrinsic component of membrane extrinsic component of cytoplasmic side of plasma membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle non-motile cilium 9+0 non-motile cilium cilium neuron projection photoreceptor disc membrane photoreceptor outer segment plasma membrane bounded cell projection cell projection photoreceptor cell cilium organelle membrane intracellular anatomical structure cytoplasm cytosol vacuolar membrane lytic vacuole vacuole intracellular membrane-bounded organelle intracellular organelle lytic vacuole membrane bounding membrane of organelle lysosomal membrane lysosome synapse cell junction
A	Guanine nucleotide-binding protein G(t) subunit alpha-3	protein-containing complex binding binding G-protein beta/gamma-subunit complex binding protein binding signaling receptor binding G protein-coupled receptor binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding protein-containing complex binding binding G-protein beta/gamma-subunit complex binding protein binding signaling receptor binding G protein-coupled receptor binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding cation binding metal ion binding pyrophosphatase activity GTPase activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity	sensory perception of sweet taste multicellular organismal process system process sensory perception of chemical stimulus sensory perception nervous system process sensory perception of taste detection of light stimulus involved in visual perception detection of light stimulus response to light stimulus detection of external stimulus sensory perception of light stimulus response to stimulus response to external stimulus sensory perception of sweet taste multicellular organismal process system process sensory perception of chemical stimulus sensory perception nervous system process sensory perception of taste detection of light stimulus involved in visual perception detection of light stimulus response to light stimulus detection of external stimulus sensory perception of light stimulus response to stimulus response to external stimulus detection of abiotic stimulus detection of stimulus detection of light stimulus involved in sensory perception response to abiotic stimulus response to radiation visual perception detection of stimulus involved in sensory perception sensory perception of umami taste phototransduction cellular response to stimulus regulation of biological process regulation of cellular process signaling biological regulation detection of visible light cell communication cellular process signal transduction phototransduction, visible light adenylate cyclase-modulating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway response to chemical response to nicotine sensory perception of bitter taste	membrane-bounded organelle intracellular anatomical structure axoneme ciliary plasm cilium intracellular membraneless organelle plasma membrane bounded cell projection intracellular organelle cell projection cellular anatomical structure cytoskeleton organelle membraneless organelle cytoplasm membrane-bounded organelle intracellular anatomical structure axoneme ciliary plasm cilium intracellular membraneless organelle plasma membrane bounded cell projection intracellular organelle cell projection cellular anatomical structure cytoskeleton organelle membraneless organelle cytoplasm protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane membrane plasma membrane membrane protein complex heterotrimeric G-protein complex side of membrane cell periphery cytoplasmic side of plasma membrane GTPase complex extrinsic component of membrane extrinsic component of cytoplasmic side of plasma membrane apical part of cell plasma membrane region apical plasma membrane acrosomal vesicle intracellular vesicle intracellular membrane-bounded organelle endomembrane system cytoplasmic vesicle secretory granule secretory vesicle vesicle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
D [auth R]	IPR013320	Concanavalin A-like lectin/glucanase domain superfamily	Homologous Superfamily
D [auth R]	IPR004124	Glycoside hydrolase, family 33, N-terminal	Domain
D [auth R]	IPR011040	Sialidase	Domain
D [auth R]	IPR026856	Sialidase family	Family
D [auth R]	IPR023364	Trans-sialidase, domain 3	Homologous Superfamily
D [auth R]	IPR036278	Sialidase superfamily	Homologous Superfamily
D [auth R]	IPR007960	Taste receptor type 2	Family
C	IPR001770	G-protein, gamma subunit	Family
C	IPR015898	G-protein, gamma subunit-like domain	Domain
C	IPR036284	G-protein gamma-like domain superfamily	Homologous Superfamily
B	IPR019775	WD40 repeat, conserved site	Conserved Site
B	IPR020472	PAC1/LIS1-like, WD-40 repeat	Repeat
B	IPR001632	G-protein beta subunit-like, WD40 repeats	Domain
B	IPR015943	WD40/YVTN repeat-like-containing domain superfamily	Homologous Superfamily
B	IPR016346	G-protein subunit beta 1-5	Family
B	IPR036322	WD40-repeat-containing domain superfamily	Homologous Superfamily
B	IPR001680	WD40 repeat	Repeat
A	IPR001408	G-protein alpha subunit, group I	Family
A	IPR001019	Guanine nucleotide binding protein, alpha subunit	Family
A	IPR011025	G protein alpha subunit, helical insertion	Homologous Superfamily
A	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
D [auth R]	: Q9NYV8	atrioventricular block common cold Low cardiac output syndrome osteosarcoma breast cancer lung cancer Pick disease cardiac arrest large cell medulloblastoma malignant colon neoplasm progressive supranuclear palsy tuberculosis
C	: P59768	pancreatic intraductal papillary-mucinous neoplasm pilocytic astrocytoma sarcoidosis ulcerative colitis adrenal cortex carcinoma breast carcinoma Duchenne muscular dystrophy glioblastoma large cell medulloblastoma medulloblastoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia pituitary cancer Sjogren syndrome X-linked mixed deafness with perilymphatic gusher pancreatic intraductal papillary-mucinous neoplasm pilocytic astrocytoma sarcoidosis ulcerative colitis adrenal cortex carcinoma breast carcinoma Duchenne muscular dystrophy glioblastoma large cell medulloblastoma medulloblastoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia pituitary cancer Sjogren syndrome X-linked mixed deafness with perilymphatic gusher astrocytic tumor Crohn disease ductal breast carcinoma in situ interstitial cystitis lung carcinoma non-small cell lung carcinoma pancreatic intraductal papillary-mucinous carcinoma Pick disease primitive neuroectodermal tumor thoracic aortic aneurysm atypical teratoid rhabdoid tumor cystic fibrosis Emery-Dreifuss muscular dystrophy invasive ductal breast carcinoma malignant ependymoma osteosarcoma
B	: P62873	intellectual disability, autosomal dominant 42 melancholia intellectual disability endogenous depression medulloblastoma myopathy ovarian cancer Precursor Cell Lymphoblastic Leukemia Lymphoma anxiety disorder Sjogren syndrome chronic kidney disease juvenile dermatomyositis lung adenocarcinoma neurotic disorder pancreatic ductal adenocarcinoma intellectual disability, autosomal dominant 42 melancholia intellectual disability endogenous depression medulloblastoma myopathy ovarian cancer Precursor Cell Lymphoblastic Leukemia Lymphoma anxiety disorder Sjogren syndrome chronic kidney disease juvenile dermatomyositis lung adenocarcinoma neurotic disorder pancreatic ductal adenocarcinoma subependymal giant cell astrocytoma breast cancer Duchenne muscular dystrophy leukemia, acute lymphocytic, susceptibility to, 1 malignant pancreatic neoplasm myelodysplastic syndrome osteosarcoma plasma cell myeloma rheumatoid arthritis swine influenza childhood acute lymphoblastic leukemia depressive disorder
A	: A8MTJ3	male infertility Male sterility

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
C, D [auth R]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
C, D [auth R]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	G Protein-Coupled Receptors: Class T	Bitter taste receptor TAS2R14 - miniG_s/gust complex with bound aristolochic acid