Annotations: 25SU

cryo-EM structure of human TAS2R4

External Resource: Annotation

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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth G]	Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-13	protein binding binding G-protein beta-subunit binding	cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation G protein-coupled receptor signaling pathway cellular process signal transduction cell communication phospholipase C-activating G protein-coupled receptor signaling pathway multicellular organismal process system process sensory perception of chemical stimulus cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation G protein-coupled receptor signaling pathway cellular process signal transduction cell communication phospholipase C-activating G protein-coupled receptor signaling pathway multicellular organismal process system process sensory perception of chemical stimulus sensory perception nervous system process sensory perception of taste	cell periphery cellular anatomical structure plasma membrane membrane somatodendritic compartment cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cell periphery cellular anatomical structure plasma membrane membrane somatodendritic compartment cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane membrane protein complex heterotrimeric G-protein complex side of membrane cytoplasmic side of plasma membrane GTPase complex extrinsic component of membrane extrinsic component of cytoplasmic side of plasma membrane synapse cell junction
D [auth B]	Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-3	cytoskeletal protein binding spectrin binding protein-containing complex binding protein binding binding enzyme binding GTPase 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 cytoskeletal protein binding spectrin binding protein-containing complex binding protein binding binding enzyme binding GTPase 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 circulatory system process regulation of blood pressure biological regulation regulation of biological quality blood circulation regulation of biological process regulation of cellular process regulation of hormone metabolic process regulation of hormone levels cellular process metabolic process regulation of metabolic process multicellular organismal process system process circulatory system process regulation of blood pressure biological regulation regulation of biological quality blood circulation regulation of biological process regulation of cellular process regulation of hormone metabolic process regulation of hormone levels cellular process metabolic process regulation of metabolic process hormone metabolic process regulation of biosynthetic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression biosynthetic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of cellular component size homeostatic process cell volume homeostasis cellular component organization cellular homeostasis cellular component organization or biogenesis regulation of cell size regulation of anatomical structure size neutral lipid metabolic process regulation of triglyceride metabolic process regulation of lipid metabolic process primary metabolic process regulation of primary metabolic process triglyceride metabolic process glycerolipid metabolic process acylglycerol metabolic process lipid metabolic process regulation of cholesterol metabolic process sterol metabolic process steroid metabolic process regulation of steroid metabolic process cholesterol metabolic process alcohol metabolic process secondary alcohol metabolic process regulation of small molecule metabolic process small molecule metabolic process regulation of phospholipid metabolic process phospholipid metabolic process organophosphate metabolic process regulation of phosphorus metabolic process phosphorus metabolic process developmental process fat cell differentiation regulation of developmental process cellular developmental process regulation of cell differentiation cell differentiation regulation of fat cell differentiation cellular response to stimulus response to stimulus signaling G protein-coupled receptor signaling pathway signal transduction cell communication monosaccharide metabolic process carbohydrate metabolic process hexose metabolic process regulation of carbohydrate metabolic process regulation of glucose metabolic process glucose metabolic process	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 cellular anatomical structure cytoplasmic side of plasma membrane GTPase complex 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 cellular anatomical structure 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 intracellular anatomical structure cytoplasm cytosol somatodendritic compartment cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection cell body
E [auth A]	Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(t) subunit alpha-3	D2 dopamine receptor binding protein binding binding signaling receptor binding G protein-coupled receptor binding dopamine receptor binding enzyme regulator activity adenylate cyclase inhibitor activity cyclase regulator activity molecular function inhibitor activity cyclase inhibitor activity molecular function regulator activity enzyme inhibitor activity adenylate cyclase regulator activity D2 dopamine receptor binding protein binding binding signaling receptor binding G protein-coupled receptor binding dopamine receptor binding enzyme regulator activity adenylate cyclase inhibitor activity cyclase regulator activity molecular function inhibitor activity cyclase inhibitor activity molecular function regulator activity enzyme inhibitor activity adenylate cyclase regulator activity 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 magnesium ion binding metal ion binding GDP binding G protein-coupled serotonin receptor binding protein-containing complex binding G-protein beta/gamma-subunit complex binding pyrophosphatase activity GTPase activity G protein 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	cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell communication G protein-coupled receptor signaling pathway cellular process signal transduction neuropeptide signaling pathway adenylate cyclase-inhibiting serotonin receptor signaling pathway G protein-coupled serotonin receptor signaling pathway adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell communication G protein-coupled receptor signaling pathway cellular process signal transduction neuropeptide signaling pathway adenylate cyclase-inhibiting serotonin receptor signaling pathway G protein-coupled serotonin receptor signaling pathway adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway adenylate cyclase-modulating G protein-coupled receptor signaling pathway response to hormone response to chemical response to endogenous stimulus response to peptide hormone response to oxygen-containing compound response to nitrogen compound cell division leukocyte migration immune system process mononuclear cell migration lymphocyte migration cell migration T cell migration cell motility regulation of steroid biosynthetic process regulation of cholesterol biosynthetic process regulation of cholesterol metabolic process steroid metabolic process regulation of lipid metabolic process sterol metabolic process positive regulation of biological process cholesterol metabolic process lipid biosynthetic process alcohol metabolic process regulation of primary metabolic process positive regulation of metabolic process regulation of small molecule metabolic process positive regulation of biosynthetic process positive regulation of lipid metabolic process small molecule metabolic process steroid biosynthetic process positive regulation of cellular process regulation of biosynthetic process secondary alcohol biosynthetic process regulation of alcohol biosynthetic process small molecule biosynthetic process regulation of steroid metabolic process cholesterol biosynthetic process positive regulation of cholesterol biosynthetic process primary metabolic process secondary alcohol metabolic process positive regulation of steroid biosynthetic process biosynthetic process sterol biosynthetic process positive regulation of lipid biosynthetic process regulation of sterol biosynthetic process alcohol biosynthetic process positive regulation of cholesterol metabolic process positive regulation of steroid metabolic process metabolic process regulation of lipid biosynthetic process positive regulation of small molecule metabolic process regulation of metabolic process positive regulation of alcohol biosynthetic process positive regulation of sterol biosynthetic process lipid metabolic process cell surface receptor signaling pathway response to cytokine response to chemokine cytokine-mediated signaling pathway cellular response to chemokine chemokine-mediated signaling pathway response to peptide cellular response to cytokine stimulus multicellular organismal process system process relaxation of smooth muscle regulation of system process regulation of muscle system process muscle system process relaxation of muscle positive regulation of relaxation of smooth muscle positive regulation of relaxation of muscle positive regulation of multicellular organismal process regulation of multicellular organismal process regulation of relaxation of smooth muscle regulation of relaxation of muscle adenylate cyclase-activating G protein-coupled receptor signaling pathway regulation of cytoskeleton organization regulation of cellular component organization microtubule cytoskeleton organization regulation of mitotic spindle organization mitotic cell cycle cellular component organization cell cycle cellular component organization or biogenesis regulation of cell cycle microtubule cytoskeleton organization involved in mitosis spindle organization cell cycle process regulation of cell cycle process regulation of microtubule-based process regulation of spindle organization regulation of organelle organization mitotic spindle organization organelle organization mitotic cell cycle process microtubule-based process cytoskeleton organization regulation of microtubule cytoskeleton organization positive regulation of protein localization to cell periphery regulation of localization protein localization to cell periphery regulation of protein localization positive regulation of protein localization to cell cortex regulation of protein localization to cell periphery localization regulation of protein localization to cell cortex macromolecule localization positive regulation of protein localization intracellular protein localization protein localization to cell cortex establishment of organelle localization regulated exocytosis cellular localization transport cell activation involved in immune response leukocyte degranulation myeloid leukocyte activation myeloid leukocyte mediated immunity vesicle-mediated transport leukocyte activation secretion by cell organelle localization leukocyte activation involved in immune response establishment of localization in cell mast cell activation leukocyte mediated immunity mast cell mediated immunity immune response secretion cell activation vacuolar localization export from cell mast cell degranulation establishment of localization myeloid cell activation involved in immune response immune effector process mast cell activation involved in immune response exocytosis lysosome localization regulation of behavior behavior regulation of eating behavior eating behavior feeding behavior regulation of feeding behavior response to ketone response to prostaglandin response to lipid response to alcohol response to prostaglandin E cellular response to forskolin cellular response to oxygen-containing compound cellular response to chemical stimulus cellular response to alcohol response to forskolin cellular response to lipid cellular response to ketone sensory perception of sweet taste 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 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 phototransduction detection of visible light phototransduction, visible light response to nicotine	midbody cellular anatomical structure cell periphery cell cortex intracellular anatomical structure 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 midbody cellular anatomical structure cell periphery cell cortex intracellular anatomical structure 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 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 intracellular organelle centrosome microtubule organizing center cytoskeleton membraneless organelle intracellular membraneless organelle microtubule cytoskeleton cytosol vacuolar membrane lytic vacuole vacuole intracellular membrane-bounded organelle lytic vacuole membrane bounding membrane of organelle lysosomal membrane organelle membrane lysosome cilium plasma membrane bounded cell projection ciliary basal body cell projection nucleus axoneme ciliary plasm apical part of cell plasma membrane region apical plasma membrane acrosomal vesicle intracellular vesicle endomembrane system cytoplasmic vesicle secretory granule secretory vesicle
B [auth N]	Single-chain variable fragment 16	-	-	-
A [auth R]	Taste receptor type 2 member 4	taste receptor activity molecular transducer activity transmembrane signaling receptor activity signaling receptor activity bitter taste receptor activity G protein-coupled receptor activity	multicellular organismal process system process nervous system process response to stimulus 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 multicellular organismal process system process nervous system process response to stimulus 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	cell periphery cellular anatomical structure plasma membrane membrane membrane-bounded organelle cilium ciliary membrane plasma membrane bounded cell projection cell projection bounding membrane of organelle organelle plasma membrane region organelle membrane cell projection membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth G]	IPR015898	G-protein, gamma subunit-like domain	Domain
C [auth G]	IPR036284	G-protein gamma-like domain superfamily	Homologous Superfamily
C [auth G]	IPR039227	Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-13	Family
C [auth G]	IPR001770	G-protein, gamma subunit	Family
D [auth B]	IPR019775	WD40 repeat, conserved site	Conserved Site
D [auth B]	IPR020472	PAC1/LIS1-like, WD-40 repeat	Repeat
D [auth B]	IPR001632	G-protein beta subunit-like, WD40 repeats	Domain
D [auth B]	IPR015943	WD40/YVTN repeat-like-containing domain superfamily	Homologous Superfamily
D [auth B]	IPR016346	G-protein subunit beta 1-5	Family
D [auth B]	IPR036322	WD40-repeat-containing domain superfamily	Homologous Superfamily
D [auth B]	IPR001680	WD40 repeat	Repeat
E [auth A]	IPR001019	Guanine nucleotide binding protein, alpha subunit	Family
E [auth A]	IPR011025	G protein alpha subunit, helical insertion	Homologous Superfamily
E [auth A]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
E [auth A]	IPR001408	G-protein alpha subunit, group I	Family
E [auth A]	IPR001408	G-protein alpha subunit, group I	Family
E [auth A]	IPR001019	Guanine nucleotide binding protein, alpha subunit	Family
E [auth A]	IPR011025	G protein alpha subunit, helical insertion	Homologous Superfamily
E [auth A]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A [auth R]	IPR030055	Taste receptor type 2 member 4	Family
A [auth R]	IPR007960	Taste receptor type 2	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
C [auth G]	: Q9P2W3	atypical teratoid rhabdoid tumor glioblastoma bone disease malignant ependymoma Crohn disease subependymal giant cell astrocytoma
D [auth B]	: P16520	congenital stationary night blindness hypertensive disorder congenital stationary night blindness 1H type 2 diabetes mellitus visual epilepsy essential hypertension Weight Gain obesity disorder coronary artery disease essential hypertension, genetic maturity-onset diabetes of the young bipolar disorder cone-rod synaptic disorder, congenital nonprogressive depressive disorder hereditary night blindness congenital stationary night blindness hypertensive disorder congenital stationary night blindness 1H type 2 diabetes mellitus visual epilepsy essential hypertension Weight Gain obesity disorder coronary artery disease essential hypertension, genetic maturity-onset diabetes of the young bipolar disorder cone-rod synaptic disorder, congenital nonprogressive depressive disorder hereditary night blindness large cell medulloblastoma medulloblastoma colorectal cancer congenital stationary night blindness 2A pituitary cancer major depressive disorder night blindness congenital stationary night blindness 1B schizophrenia
E [auth A]	: A8MTJ3	substance withdrawal syndrome dissociative amnesia malignant glioma nicotine dependence pancreatic ductal adenocarcinoma acute myeloid leukemia Withdrawal Symptoms breast cancer glioblastoma intellectual disability large cell medulloblastoma malignant pancreatic neoplasm oligodendroglioma Pick disease astrocytic tumor substance withdrawal syndrome dissociative amnesia malignant glioma nicotine dependence pancreatic ductal adenocarcinoma acute myeloid leukemia Withdrawal Symptoms breast cancer glioblastoma intellectual disability large cell medulloblastoma malignant pancreatic neoplasm oligodendroglioma Pick disease astrocytic tumor breast carcinoma interstitial cystitis malignant colon neoplasm medulloblastoma ovarian cancer subependymal giant cell astrocytoma amnestic disorder atypical teratoid rhabdoid tumor breast fibroadenoma ductal breast carcinoma in situ invasive ductal breast carcinoma male infertility Male sterility
A [auth R]	: Q9NYW5	atrioventricular block congestive heart failure lung cancer cardiac arrest Hypovolemic Shock common cold

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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.

25SU | pdb_000025su

cryo-EM structure of human TAS2R4

External Resource: Annotation

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

InterPro: Protein Family Classification InterPro Database Homepage

Pharos: Disease Associations Pharos Homepage Annotation