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Yorodumi- PDB-8uhb: Cryo-EM Structure of the Ro5256390-bound hTA1-Gs heterotrimer sig... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 8uhb | |||||||||||||||
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| Title | Cryo-EM Structure of the Ro5256390-bound hTA1-Gs heterotrimer signaling complex | |||||||||||||||
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Keywords | MEMBRANE PROTEIN / GPCR / Signaling Complex / Trace Amine-associated Receptor | |||||||||||||||
| Function / homology | Function and homology informationAmine ligand-binding receptors / trace-amine receptor activity / beta2-adrenergic receptor activity / positive regulation of mini excitatory postsynaptic potential / AMPA selective glutamate receptor signaling pathway / norepinephrine-epinephrine-mediated vasodilation involved in regulation of systemic arterial blood pressure / adenylate cyclase-inhibiting adrenergic receptor signaling pathway / positive regulation of autophagosome maturation / heat generation / norepinephrine binding ...Amine ligand-binding receptors / trace-amine receptor activity / beta2-adrenergic receptor activity / positive regulation of mini excitatory postsynaptic potential / AMPA selective glutamate receptor signaling pathway / norepinephrine-epinephrine-mediated vasodilation involved in regulation of systemic arterial blood pressure / adenylate cyclase-inhibiting adrenergic receptor signaling pathway / positive regulation of autophagosome maturation / heat generation / norepinephrine binding / Adrenoceptors / negative regulation of smooth muscle contraction / positive regulation of cardiac muscle cell contraction / positive regulation of lipophagy / negative regulation of G protein-coupled receptor signaling pathway / negative regulation of multicellular organism growth / response to psychosocial stress / adrenergic receptor signaling pathway / diet induced thermogenesis / endosome to lysosome transport / alkylglycerophosphoethanolamine phosphodiesterase activity / positive regulation of cAMP/PKA signal transduction / adenylate cyclase binding / smooth muscle contraction / negative regulation of cardiac muscle cell apoptotic process / potassium channel regulator activity / positive regulation of bone mineralization / bone resorption / neuronal dense core vesicle / intercellular bridge / regulation of sodium ion transport / adenylate cyclase-activating adrenergic receptor signaling pathway / endomembrane system / positive regulation of cardiac muscle cell apoptotic process / receptor-mediated endocytosis / brown fat cell differentiation / response to cold / adenylate cyclase activator activity / clathrin-coated endocytic vesicle membrane / electron transport chain / G protein-coupled receptor activity / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / cellular response to amyloid-beta / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / mitotic spindle / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cargo recognition for clathrin-mediated endocytosis / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / Inactivation, recovery and regulation of the phototransduction cascade / positive regulation of cold-induced thermogenesis / extracellular vesicle / amyloid-beta binding / sensory perception of taste / Clathrin-mediated endocytosis / adenylate cyclase-activating G protein-coupled receptor signaling pathway / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / microtubule cytoskeleton / retina development in camera-type eye / GTPase binding / fibroblast proliferation / cytoplasmic vesicle / Ca2+ pathway / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / transcription by RNA polymerase II / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway Similarity search - Function | |||||||||||||||
| Biological species | Homo sapiens (human)![]() ![]() | |||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.35 Å | |||||||||||||||
Authors | Zilberg, G. / Warren, A.L. / Parpounas, A.K. / Wacker, D. | |||||||||||||||
| Funding support | United States, 4items
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Citation | Journal: Nat Commun / Year: 2024Title: Molecular basis of human trace amine-associated receptor 1 activation. Authors: Gregory Zilberg / Alexandra K Parpounas / Audrey L Warren / Shifan Yang / Daniel Wacker / ![]() Abstract: The human trace amine-associated receptor 1 (hTAAR1, hTA1) is a key regulator of monoaminergic neurotransmission and the actions of psychostimulants. Despite preclinical research demonstrating its ...The human trace amine-associated receptor 1 (hTAAR1, hTA1) is a key regulator of monoaminergic neurotransmission and the actions of psychostimulants. Despite preclinical research demonstrating its tractability as a drug target, its molecular mechanisms of activation remain unclear. Moreover, poorly understood pharmacological differences between rodent and human TA1 complicate the translation of findings from preclinical disease models into novel pharmacotherapies. To elucidate hTA1's mechanisms on the molecular scale and investigate the underpinnings of its divergent pharmacology from rodent orthologs, we herein report the structure of the human TA1 receptor in complex with a Gαs heterotrimer. Our structure reveals shared structural elements with other TAARs, as well as with its closest monoaminergic orthologue, the serotonin receptor 5-HT4R. We further find that a single mutation dramatically shifts the selectivity of hTA1 towards that of its rodent orthologues, and report on the effects of substituting residues to those found in serotonin and dopamine receptors. Strikingly, we also discover that the atypical antipsychotic medication and pan-monoaminergic antagonist asenapine potently and efficaciously activates hTA1. Together our studies provide detailed insight into hTA1 structure and function, contrast its molecular pharmacology with that of related receptors, and uncover off-target activities of monoaminergic drugs at hTA1. | |||||||||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 8uhb.cif.gz | 364.5 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb8uhb.ent.gz | 291.4 KB | Display | PDB format |
| PDBx/mmJSON format | 8uhb.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/uh/8uhb ftp://data.pdbj.org/pub/pdb/validation_reports/uh/8uhb | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 42268MC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-Guanine nucleotide-binding protein ... , 3 types, 3 molecules BCG
| #2: Protein | Mass: 39418.086 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Cell line (production host): Sf9 / Production host: ![]() |
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| #3: Protein | Mass: 45803.598 Da / Num. of mol.: 1 Mutation: E189D, M191V, T193S, E194D, N271K, K274D, R280K, T284D, I285T, G226A, A366S Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
| #4: Protein | Mass: 7861.143 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GNG2 / Production host: ![]() |
-Protein / Antibody / Non-polymers , 3 types, 3 molecules AN

| #1: Protein | Mass: 60019.816 Da / Num. of mol.: 1 / Mutation: M(-129)W, R(-14)G, Q(-3)E, F112W Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: cybC, ADRB2, TAAR1 / Cell line (production host): Sf9 / Production host: ![]() References: UniProt: P0ABE7, UniProt: P07550, UniProt: Q96RJ0 |
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| #5: Antibody | Mass: 14714.320 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
| #6: Chemical | ChemComp-WV8 / ( |
-Details
| Has ligand of interest | Y |
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| Has protein modification | Y |
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: hTA1-Gs-Nb35 complex (Ro5256390) / Type: COMPLEX / Entity ID: #1-#5 / Source: RECOMBINANT |
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| Molecular weight | Units: MEGADALTONS / Experimental value: NO |
| Source (natural) | Organism: Homo sapiens (human) |
| Source (recombinant) | Organism: ![]() |
| Buffer solution | pH: 7.4 |
| Specimen | Conc.: 1.2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Specimen support | Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3 |
| Vitrification | Instrument: LEICA EM GP / Cryogen name: ETHANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 1800 nm / Nominal defocus min: 500 nm |
| Image recording | Electron dose: 53.88 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
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| 3D reconstruction | Resolution: 3.35 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 626370 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refine LS restraints |
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About Yorodumi



Homo sapiens (human)

United States, 4items
Citation
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FIELD EMISSION GUN