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- EMDB-42268: Cryo-EM Structure of the Ro5256390-bound hTA1-Gs heterotrimer sig... -
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Open data
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Basic information
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Title | Cryo-EM Structure of the Ro5256390-bound hTA1-Gs heterotrimer signaling complex | |||||||||||||||
![]() | Primary Map | |||||||||||||||
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![]() | GPCR / Signaling Complex / Trace Amine-associated Receptor / MEMBRANE PROTEIN | |||||||||||||||
Function / homology | ![]() adenylate cyclase regulator activity / regulation of parathyroid hormone secretion / COPI-coated Golgi to ER transport vesicle / post-embryonic body morphogenesis / : / Amine ligand-binding receptors / response to parathyroid hormone / trace-amine receptor activity / genomic imprinting / sensory perception of chemical stimulus ...adenylate cyclase regulator activity / regulation of parathyroid hormone secretion / COPI-coated Golgi to ER transport vesicle / post-embryonic body morphogenesis / : / Amine ligand-binding receptors / response to parathyroid hormone / trace-amine receptor activity / genomic imprinting / sensory perception of chemical stimulus / positive regulation of cAMP-mediated signaling / tissue homeostasis / positive regulation of sodium ion transport / endochondral ossification / energy reserve metabolic process / embryonic cranial skeleton morphogenesis / positive regulation of osteoclast differentiation / beta2-adrenergic receptor activity / positive regulation of mini excitatory postsynaptic potential / embryonic hindlimb morphogenesis / cartilage development / positive regulation of cAMP-dependent protein kinase activity / positive regulation of AMPA receptor activity / norepinephrine binding / alkylglycerophosphoethanolamine phosphodiesterase activity / Adrenoceptors / heat generation / positive regulation of autophagosome maturation / norepinephrine-epinephrine-mediated vasodilation involved in regulation of systemic arterial blood pressure / activation of transmembrane receptor protein tyrosine kinase activity / negative regulation of smooth muscle contraction / positive regulation of lipophagy / skin development / response to psychosocial stress / negative regulation of multicellular organism growth / negative regulation of G protein-coupled receptor signaling pathway / adrenergic receptor signaling pathway / endosome to lysosome transport / cellular response to glucagon stimulus / diet induced thermogenesis / neuronal dense core vesicle / positive regulation of protein kinase A signaling / hair follicle placode formation / adenylate cyclase binding / mu-type opioid receptor binding / smooth muscle contraction / corticotropin-releasing hormone receptor 1 binding / developmental growth / G-protein alpha-subunit binding / alpha-tubulin binding / D1 dopamine receptor binding / regulation of signal transduction / potassium channel regulator activity / bone resorption / positive regulation of osteoblast differentiation / positive regulation of bone mineralization / adenylate cyclase-activating adrenergic receptor signaling pathway / brown fat cell differentiation / beta-2 adrenergic receptor binding / regulation of sodium ion transport / ruffle / adenylate cyclase activator activity / negative regulation of blood pressure / response to cold / receptor-mediated endocytosis / G protein activity / post-embryonic development / positive regulation of GTPase activity / trans-Golgi network membrane / skeletal system development / G protein-coupled receptor activity / electron transport chain / insulin-like growth factor receptor binding / ionotropic glutamate receptor binding / clathrin-coated endocytic vesicle membrane / G-protein beta/gamma-subunit complex binding / bone development / Olfactory Signaling Pathway / Activation of the phototransduction cascade / positive regulation of protein serine/threonine kinase activity / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / multicellular organism growth / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / positive regulation of insulin secretion / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G protein-coupled acetylcholine receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / recycling endosome / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / cognition / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Sensory perception of sweet, bitter, and umami (glutamate) taste Similarity search - Function | |||||||||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() | |||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.35 Å | |||||||||||||||
![]() | Zilberg G / Warren AL / Parpounas AK / Wacker D | |||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: 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. | |||||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 31.7 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 20.4 KB 20.4 KB | Display Display | ![]() |
Images | ![]() | 44.3 KB | ||
Filedesc metadata | ![]() | 7 KB | ||
Others | ![]() ![]() | 59.4 MB 59.4 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8uhbMC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | Primary Map | ||||||||||||||||||||
Voxel size | X=Y=Z: 1.069 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: Half map 1
File | emd_42268_half_map_1.map | ||||||||||||
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Annotation | Half map 1 | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Half map 2
File | emd_42268_half_map_2.map | ||||||||||||
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Annotation | Half map 2 | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
-Entire : hTA1-Gs-Nb35 complex (Ro5256390)
Entire | Name: hTA1-Gs-Nb35 complex (Ro5256390) |
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Components |
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-Supramolecule #1: hTA1-Gs-Nb35 complex (Ro5256390)
Supramolecule | Name: hTA1-Gs-Nb35 complex (Ro5256390) / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5 |
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Source (natural) | Organism: ![]() |
-Macromolecule #1: Soluble cytochrome b562,Beta-2 adrenergic receptor,Trace amine-as...
Macromolecule | Name: Soluble cytochrome b562,Beta-2 adrenergic receptor,Trace amine-associated receptor 1 type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 60.019816 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MKTIIALSYI FCLVFADYKD DDDAKLQTMH HHHHHHHHHE NLYFQGGTTA DLEDNWETLN DNLKVIEKAD NAAQVKDALT KMRAAALDA QKATPPKLED KSPDSPEMKD FRHGFDILVG QIDDALKLAN EGKVKEAQAA AEQLKTTRNA YIQKYLMGQP G NGSAFLLA ...String: MKTIIALSYI FCLVFADYKD DDDAKLQTMH HHHHHHHHHE NLYFQGGTTA DLEDNWETLN DNLKVIEKAD NAAQVKDALT KMRAAALDA QKATPPKLED KSPDSPEMKD FRHGFDILVG QIDDALKLAN EGKVKEAQAA AEQLKTTRNA YIQKYLMGQP G NGSAFLLA PNRSHAPDHD VTQQRDEMMP FCHNIINISC VKNNWSNDVR ASLYSLMVLI ILTTLVGNLI VIVSISHFKQ LH TPTNWLI HSMATVDFLL GCLVMPYSMV RSAEHCWYFG EVFCKIHTST DIMLSSASIW HLSFISIDRY YAVCDPLRYK AKM NILVIC VMIFISWSVP AVFAFGMIFL ELNFKGAEEI YYKHVHCRGG CSVFFSKISG VLTFMTSFYI PGSIMLCVYY RIYL IAKEQ ARLISDANQK LQIGLEMKNG ISQSKERKAV KTLGIVMGVF LICWCPFFIC TVMDPFLHYI IPPTLNDVLI WFGYL NSTF NPMVYAFFYP WFRKALKMML FGKIFQKDSS RCKLFLELSS UniProtKB: Soluble cytochrome b562, Beta-2 adrenergic receptor, Trace amine-associated receptor 1 |
-Macromolecule #2: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Macromolecule | Name: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 39.418086 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MHHHHHHLEV LFQGPGSSGS ELDQLRQEAE QLKNQIRDAR KACADATLSQ ITNNIDPVGR IQMRTRRTLR GHLAKIYAMH WGTDSRLLV SASQDGKLII WDSYTTNKVH AIPLRSSWVM TCAYAPSGNY VACGGLDNIC SIYNLKTREG NVRVSRELAG H TGYLSCCR ...String: MHHHHHHLEV LFQGPGSSGS ELDQLRQEAE QLKNQIRDAR KACADATLSQ ITNNIDPVGR IQMRTRRTLR GHLAKIYAMH WGTDSRLLV SASQDGKLII WDSYTTNKVH AIPLRSSWVM TCAYAPSGNY VACGGLDNIC SIYNLKTREG NVRVSRELAG H TGYLSCCR FLDDNQIVTS SGDTTCALWD IETGQQTTTF TGHTGDVMSL SLAPDTRLFV SGACDASAKL WDVREGMCRQ TF TGHESDI NAICFFPNGN AFATGSDDAT CRLFDLRADQ ELMTYSHDNI ICGITSVSFS KSGRLLLAGY DDFNCNVWDA LKA DRAGVL AGHDNRVSCL GVTDDGMAVA TGSWDSFLKI WN UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 |
-Macromolecule #3: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
Macromolecule | Name: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 45.803598 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MGCLGNSKTE DQRNEEKAQR EANKKIEKQL QKDKQVYRAT HRLLLLGAGE SGKSTIVKQM RILHVNGFNG EGGEEDPQAA RSNSDGEKA TKVQDIKNNL KEAIETIVAA MSNLVPPVEL ANPENQFRVD YILSVMNVPN FDFPPEFYEH AKALWEDEGV R ACYERSNE ...String: MGCLGNSKTE DQRNEEKAQR EANKKIEKQL QKDKQVYRAT HRLLLLGAGE SGKSTIVKQM RILHVNGFNG EGGEEDPQAA RSNSDGEKA TKVQDIKNNL KEAIETIVAA MSNLVPPVEL ANPENQFRVD YILSVMNVPN FDFPPEFYEH AKALWEDEGV R ACYERSNE YQLIDCAQYF LDKIDVIKQA EYMPTEQDLL RCRVLTSGIF ETKFQVDKVN FHMFDVGAQR DERRKWIQCF ND VTAIIFV VASSSYNMVI REDNQTNRLQ EALKLFDSIW NNKWLRDTSV ILFLNKQDLL AEKVLAGKSK IEDYFPEFAR YTT PEDATP EPGEDPRVTR AKYFIRDEFL RISTASGDGR HYCYPHFTCS VDTENIRRVF NDCRDIIQRM HLRQYELL UniProtKB: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short |
-Macromolecule #4: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Macromolecule | Name: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 7.861143 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 |
-Macromolecule #5: Nanobody 35
Macromolecule | Name: Nanobody 35 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 14.71432 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: QVQLQESGGG LVQPGGSLRL SCAASGFTFS NYKMNWVRQA PGKGLEWVSD ISQSGASISY TGSVKGRFTI SRDNAKNTLY LQMNSLKPE DTAVYYCARC PAPFTRDCFD VTSTTYAYRG QGTQVTVSSH HHHHH |
-Macromolecule #6: (2R,4S)-4-[(2S)-2-phenylbutyl]-1,3-oxazolidin-2-amine
Macromolecule | Name: (2R,4S)-4-[(2S)-2-phenylbutyl]-1,3-oxazolidin-2-amine / type: ligand / ID: 6 / Number of copies: 1 / Formula: WV8 |
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Molecular weight | Theoretical: 218.295 Da |
Chemical component information | ![]() ChemComp-WV8: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 1.2 mg/mL |
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Buffer | pH: 7.4 |
Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 |
Vitrification | Cryogen name: ETHANE / Instrument: LEICA EM GP |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 53.88 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.8 µm / Nominal defocus min: 0.5 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: PDB ENTRY PDB model - PDB ID: |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.35 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 626370 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: ANGULAR RECONSTITUTION |