6LI3

cryo-EM structure of GPR52-miniGs-NB35


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.32 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis of ligand recognition and self-activation of orphan GPR52.

Lin, X.Li, M.Wang, N.Wu, Y.Luo, Z.Guo, S.Han, G.W.Li, S.Yue, Y.Wei, X.Xie, X.Chen, Y.Zhao, S.Wu, J.Lei, M.Xu, F.

(2020) Nature 579: 152-157

  • DOI: 10.1038/s41586-020-2019-0
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • GPR52 is a class-A orphan G-protein-coupled receptor that is highly expressed in the brain and represents a promising therapeutic target for the treatment of Huntington's disease and several psychiatric disorders <sup>1,2 </sup>. Pathological malfunc ...

    GPR52 is a class-A orphan G-protein-coupled receptor that is highly expressed in the brain and represents a promising therapeutic target for the treatment of Huntington's disease and several psychiatric disorders 1,2 . Pathological malfunction of GPR52 signalling occurs primarily through the heterotrimeric G s protein 2 , but it is unclear how GPR52 and G s couple for signal transduction and whether a native ligand or other activating input is required. Here we present the high-resolution structures of human GPR52 in three states: a ligand-free state, a G s -coupled self-activation state and a potential allosteric ligand-bound state. Together, our structures reveal that extracellular loop 2 occupies the orthosteric binding pocket and operates as a built-in agonist, conferring an intrinsically high level of basal activity to GPR52 3 . A fully active state is achieved when G s is coupled to GPR52 in the absence of an external agonist. The receptor also features a side pocket for ligand binding. These insights into the structure and function of GPR52 could improve our understanding of other self-activated GPCRs, enable the identification of endogenous and tool ligands, and guide drug discovery efforts that target GPR52.


    Organizational Affiliation

    Shanghai Institute of Precision Medicine, Shanghai, China.,Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China.,Department of Biological Sciences, Bridge Institute, University of Southern California, Los Angeles, CA, USA.,University of Chinese Academy of Sciences, Beijing, China.,Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. leim@shsmu.edu.cn.,Institute of Molecular Enzymology, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, China.,Shanghai Institute of Precision Medicine, Shanghai, China. leim@shsmu.edu.cn.,iHuman Institute, ShanghaiTech University, Shanghai, China.,School of Life Science and Technology, ShanghaiTech University, Shanghai, China.,Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Institute of Precision Medicine, Shanghai, China. wujian@shsmu.edu.cn.,Centre for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai, China. xufei@shanghaitech.edu.cn.,iHuman Institute, ShanghaiTech University, Shanghai, China. xufei@shanghaitech.edu.cn.,Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China. wujian@shsmu.edu.cn.,Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. wujian@shsmu.edu.cn.,School of Life Science and Technology, ShanghaiTech University, Shanghai, China. xufei@shanghaitech.edu.cn.,CAS Key Laboratory of Receptor Research, National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.,Key Laboratory of Cell Differentiation and Apoptosis, Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China. leim@shsmu.edu.cn.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
G-protein coupled receptor 52
R
340Homo sapiensMutation(s): 2 
Gene Names: GPR52
Find proteins for Q9Y2T5 (Homo sapiens)
Go to Gene View: GPR52
Go to UniProtKB:  Q9Y2T5
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
A
248Homo sapiensMutation(s): 6 
Gene Names: GNAS (GNAS1, GSP)
Find proteins for P63092 (Homo sapiens)
Go to Gene View: GNAS
Go to UniProtKB:  P63092
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
B
340Homo sapiensMutation(s): 0 
Gene Names: GNB1
Find proteins for P62873 (Homo sapiens)
Go to Gene View: GNB1
Go to UniProtKB:  P62873
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
G
71Homo sapiensMutation(s): 1 
Gene Names: GNG2
Find proteins for P59768 (Homo sapiens)
Go to Gene View: GNG2
Go to UniProtKB:  P59768
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
nanobody Nb35
N
149N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.32 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2020-02-26
    Type: Initial release
  • Version 1.1: 2020-03-04
    Type: Database references
  • Version 1.2: 2020-03-18
    Type: Database references