8JLN

T1AM-bound hTAAR1-Gs protein complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.24 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

Ligand recognition and G-protein coupling of trace amine receptor TAAR1.

Xu, Z.Guo, L.Yu, J.Shen, S.Wu, C.Zhang, W.Zhao, C.Deng, Y.Tian, X.Feng, Y.Hou, H.Su, L.Wang, H.Guo, S.Wang, H.Wang, K.Chen, P.Zhao, J.Zhang, X.Yong, X.Cheng, L.Liu, L.Yang, S.Yang, F.Wang, X.Yu, X.Xu, Y.Sun, J.P.Yan, W.Shao, Z.

(2023) Nature 624: 672-681

  • DOI: https://doi.org/10.1038/s41586-023-06804-z
  • Primary Citation of Related Structures:  
    8JLJ, 8JLK, 8JLN, 8JLO, 8JLP, 8JLQ, 8JLR, 8JSO, 8JSP

  • PubMed Abstract: 

    Trace-amine-associated receptors (TAARs), a group of biogenic amine receptors, have essential roles in neurological and metabolic homeostasis 1 . They recognize diverse endogenous trace amines and subsequently activate a range of G-protein-subtype signalling pathways 2,3 . Notably, TAAR1 has emerged as a promising therapeutic target for treating psychiatric disorders 4,5 . However, the molecular mechanisms underlying its ability to recognize different ligands remain largely unclear. Here we present nine cryo-electron microscopy structures, with eight showing human and mouse TAAR1 in a complex with an array of ligands, including the endogenous 3-iodothyronamine, two antipsychotic agents, the psychoactive drug amphetamine and two identified catecholamine agonists, and one showing 5-HT 1A R in a complex with an antipsychotic agent. These structures reveal a rigid consensus binding motif in TAAR1 that binds to endogenous trace amine stimuli and two extended binding pockets that accommodate diverse chemotypes. Combined with mutational analysis, functional assays and molecular dynamic simulations, we elucidate the structural basis of drug polypharmacology and identify the species-specific differences between human and mouse TAAR1. Our study provides insights into the mechanism of ligand recognition and G-protein selectivity by TAAR1, which may help in the discovery of ligands or therapeutic strategies for neurological and metabolic disorders.


  • Organizational Affiliation

    Division of Nephrology and Kidney Research Institute, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
mGs371Homo sapiensMutation(s): 0 
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
GTEx:  ENSG00000087460 
Find proteins for Q5JWF2 (Homo sapiens)
Explore Q5JWF2 
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GTEx:  ENSG00000087460 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP63096P63092Q5JWF2
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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-1358Homo sapiensMutation(s): 0 
Gene Names: GNB1
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Find proteins for P62873 (Homo sapiens)
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PHAROS:  P62873
GTEx:  ENSG00000078369 
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UniProt GroupP62873
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Soluble cytochrome b562,Trace amine-associated receptor 1C [auth R]470Escherichia coliHomo sapiens
This entity is chimeric
Mutation(s): 3 
Gene Names: cybCTAAR1
Membrane Entity: Yes 
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Find proteins for Q96RJ0 (Homo sapiens)
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GTEx:  ENSG00000146399 
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UniProt GroupsP0ABE7Q96RJ0
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
ScFv16D [auth S]251Mus musculusMutation(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 
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Find proteins for P59768 (Homo sapiens)
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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
UJF (Subject of Investigation/LOI)
Query on UJF

Download Ideal Coordinates CCD File 
F [auth R]4-[4-(2-azanylethyl)-2-iodanyl-phenoxy]phenol
C14 H14 I N O2
XIINYOJWNGOUPF-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.24 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)China31972916

Revision History  (Full details and data files)

  • Version 1.0: 2023-11-15
    Type: Initial release
  • Version 1.1: 2024-01-03
    Changes: Database references