8IEQ

Cryo-EM structure of G-protein free GPR156


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.73 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 2.2 of the entry. See complete history


Literature

Constitutive activation mechanism of a class C GPCR.

Shin, J.Park, J.Jeong, J.Lam, J.H.Qiu, X.Wu, D.Kim, K.Lee, J.Y.Robinson, C.V.Hyun, J.Katritch, V.Kim, K.P.Cho, Y.

(2024) Nat Struct Mol Biol 31: 678-687

  • DOI: https://doi.org/10.1038/s41594-024-01224-7
  • Primary Citation of Related Structures:  
    8IEB, 8IEC, 8IED, 8IEI, 8IEP, 8IEQ

  • PubMed Abstract: 

    Class C G-protein-coupled receptors (GPCRs) are activated through binding of agonists to the large extracellular domain (ECD) followed by rearrangement of the transmembrane domains (TMDs). GPR156, a class C orphan GPCR, is unique because it lacks an ECD and exhibits constitutive activity. Impaired GPR156-G i signaling contributes to loss of hearing. Here we present the cryo-electron microscopy structures of human GPR156 in the G o -free and G o -coupled states. We found that an endogenous phospholipid molecule is located within each TMD of the GPR156 dimer. Asymmetric binding of Gα to the phospholipid-bound GPR156 dimer restructures the first and second intracellular loops and the carboxy-terminal part of the elongated transmembrane 7 (TM7) without altering dimer conformation. Our findings reveal that GPR156 is a transducer for phospholipid signaling. Constant binding of abundant phospholipid molecules and the G-protein-induced reshaping of the cytoplasmic face provide a basis for the constitutive activation of GPR156.


  • Organizational Affiliation

    Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Probable G-protein coupled receptor 156
A, B, C, D
598Homo sapiensMutation(s): 0 
Gene Names: GPR156
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q8NFN8 (Homo sapiens)
Explore Q8NFN8 
Go to UniProtKB:  Q8NFN8
PHAROS:  Q8NFN8
GTEx:  ENSG00000175697 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8NFN8
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.73 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Research Foundation (NRF, Korea)Korea, Republic Of2021R1A2C301335711

Revision History  (Full details and data files)

  • Version 1.0: 2024-02-14
    Type: Initial release
  • Version 1.1: 2024-02-21
    Changes: Database references
  • Version 2.0: 2024-03-06
    Changes: Advisory, Atomic model, Author supporting evidence, Data collection, Derived calculations, Non-polymer description, Other, Structure summary
  • Version 2.1: 2024-05-01
    Changes: Database references
  • Version 2.2: 2024-10-16
    Changes: Data collection, Structure summary