8WC5

Cryo-EM structure of the TMA-bound mTAAR1-Gs complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural and signaling mechanisms of TAAR1 enabled preferential agonist design.

Shang, P.Rong, N.Jiang, J.J.Cheng, J.Zhang, M.H.Kang, D.Qi, L.Guo, L.Yang, G.M.Liu, Q.Zhou, Z.Li, X.B.Zhu, K.K.Meng, Q.B.Han, X.Yan, W.Kong, Y.Yang, L.Wang, X.Lei, D.Feng, X.Liu, X.Yu, X.Wang, Y.Li, Q.Shao, Z.H.Yang, F.Sun, J.P.

(2023) Cell 186: 5347-5362.e24

  • DOI: https://doi.org/10.1016/j.cell.2023.10.014
  • Primary Citation of Related Structures:  
    8WC3, 8WC4, 8WC5, 8WC6, 8WC7, 8WC8, 8WC9, 8WCA, 8WCB, 8WCC

  • PubMed Abstract: 

    Trace amine-associated receptor 1 (TAAR1) senses a spectrum of endogenous amine-containing metabolites (EAMs) to mediate diverse psychological functions and is useful for schizophrenia treatment without the side effects of catalepsy. Here, we systematically profiled the signaling properties of TAAR1 activation and present nine structures of TAAR1-Gs/Gq in complex with EAMs, clinical drugs, and synthetic compounds. These structures not only revealed the primary amine recognition pocket (PARP) harboring the conserved acidic D 3.32 for conserved amine recognition and "twin" toggle switch for receptor activation but also elucidated that targeting specific residues in the second binding pocket (SBP) allowed modulation of signaling preference. In addition to traditional drug-induced Gs signaling, Gq activation by EAM or synthetic compounds is beneficial to schizophrenia treatment. Our results provided a structural and signaling framework for molecular recognition by TAAR1, which afforded structural templates and signal clues for TAAR1-targeted candidate compounds design.


  • Organizational Affiliation

    NHC Key Laboratory of Otorhinolaryngology, Qilu hospital and School of Basic Medical Sciences, Shandong University, Jinan, Shandong 250012, China; Advanced Medical Research Institute and Meili Lake Translational Research Park, Shandong University, Jinan, Shandong 250012, China.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(s) subunit alpha isoforms short362Homo sapiensMutation(s): 0 
EC: 3.6.5
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P63096 (Homo sapiens)
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Go to UniProtKB:  P63096
PHAROS:  P63096
GTEx:  ENSG00000127955 
Find proteins for P63092 (Homo sapiens)
Explore P63092 
Go to UniProtKB:  P63092
PHAROS:  P63092
GTEx:  ENSG00000087460 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP63096P63092
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1345Homo sapiensMutation(s): 0 
Gene Names: GNB1
UniProt & NIH Common Fund Data Resources
Find proteins for P62873 (Homo sapiens)
Explore P62873 
Go to UniProtKB:  P62873
PHAROS:  P62873
GTEx:  ENSG00000078369 
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UniProt GroupP62873
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Trace amine-associated receptor 1C [auth R]332Mus musculusMutation(s): 0 
Gene Names: Taar1Ta1Tar1Trar1
Membrane Entity: Yes 
UniProt
Find proteins for Q923Y8 (Mus musculus)
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UniProt GroupQ923Y8
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
scFv16D [auth S]285synthetic constructMutation(s): 0 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2E [auth Y]71Homo sapiensMutation(s): 0 
Gene Names: GNG2
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P59768 (Homo sapiens)
Explore P59768 
Go to UniProtKB:  P59768
PHAROS:  P59768
GTEx:  ENSG00000186469 
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UniProt GroupP59768
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
TMA (Subject of Investigation/LOI)
Query on TMA

Download Ideal Coordinates CCD File 
F [auth R]TETRAMETHYLAMMONIUM ION
C4 H12 N
QEMXHQIAXOOASZ-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China81773704

Revision History  (Full details and data files)

  • Version 1.0: 2023-12-27
    Type: Initial release
  • Version 1.1: 2024-10-23
    Changes: Data collection, Structure summary