8IEC

Cryo-EM structure of miniGo-scFv16 of GPR156-miniGo-scFv16 complex (local refine)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.18 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

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
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(o) subunit alphaA [auth C]228Homo sapiensMutation(s): 0 
Gene Names: GNAO1
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Find proteins for P09471 (Homo sapiens)
Explore P09471 
Go to UniProtKB:  P09471
GTEx:  ENSG00000087258 
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UniProt GroupP09471
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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-1B [auth D]358Homo sapiensMutation(s): 0 
Gene Names: GNB1
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Find proteins for P62873 (Homo sapiens)
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Go to UniProtKB:  P62873
PHAROS:  P62873
GTEx:  ENSG00000078369 
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UniProt GroupP62873
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Single-chain variable fragment scFv16C [auth N]261Mus musculusMutation(s): 0 
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2D [auth Y]71Homo sapiensMutation(s): 0 
Gene Names: GNG2
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
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.18 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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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 1.2: 2024-05-01
    Changes: Database references