7F8W

Cryo-EM structure of the cholecystokinin receptor CCKBR in complex with gastrin-17 and Gq


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.10 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

Structures of the human cholecystokinin receptors bound to agonists and antagonists.

Zhang, X.He, C.Wang, M.Zhou, Q.Yang, D.Zhu, Y.Feng, W.Zhang, H.Dai, A.Chu, X.Wang, J.Yang, Z.Jiang, Y.Sensfuss, U.Tan, Q.Han, S.Reedtz-Runge, S.Xu, H.E.Zhao, S.Wang, M.W.Wu, B.Zhao, Q.

(2021) Nat Chem Biol 17: 1230-1237

  • DOI: https://doi.org/10.1038/s41589-021-00866-8
  • Primary Citation of Related Structures:  
    7F8U, 7F8V, 7F8W, 7F8X, 7F8Y

  • PubMed Abstract: 

    Cholecystokinin receptors, CCK A R and CCK B R, are important neurointestinal peptide hormone receptors and play a vital role in food intake and appetite regulation. Here, we report three crystal structures of the human CCK A R in complex with different ligands, including one peptide agonist and two small-molecule antagonists, as well as two cryo-electron microscopy structures of CCK B R-gastrin in complex with G i2 and G q , respectively. These structures reveal the recognition pattern of different ligand types and the molecular basis of peptide selectivity in the cholecystokinin receptor family. By comparing receptor structures in different conformational states, a stepwise activation process of cholecystokinin receptors is proposed. Combined with pharmacological data, our results provide atomic details for differential ligand recognition and receptor activation mechanisms. These insights will facilitate the discovery of potential therapeutics targeting cholecystokinin receptors.


  • Organizational Affiliation

    State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(q) subunit alpha353Homo sapiensMutation(s): 0 
Gene Names: GNAQGAQ
EC: 3.6.5
Membrane Entity: Yes 
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Find proteins for P50148 (Homo sapiens)
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PHAROS:  P50148
GTEx:  ENSG00000156052 
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UniProt GroupP50148
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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-1351Homo 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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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-271Homo 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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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
scFv16268Homo sapiensMutation(s): 0 
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  • Reference Sequence

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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Gastrin-1717Homo sapiensMutation(s): 0 
Membrane Entity: Yes 
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Find proteins for P01350 (Homo sapiens)
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GTEx:  ENSG00000184502 
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
Gastrin/cholecystokinin type B receptorF [auth R]465Homo sapiensMutation(s): 0 
Gene Names: CCKBR
Membrane Entity: Yes 
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Find proteins for P32239 (Homo sapiens)
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PHAROS:  P32239
GTEx:  ENSG00000110148 
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  • Reference Sequence
Small Molecules
Modified Residues  2 Unique
IDChains TypeFormula2D DiagramParent
NFA
Query on NFA
E
L-PEPTIDE LINKINGC9 H12 N2 OPHE
PCA
Query on PCA
E
L-PEPTIDE LINKINGC5 H7 N O3GLN
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Science Foundation (NSF, China)China21704064
National Science Foundation (NSF, China)China81773792
National Science Foundation (NSF, China)China81973373
National Science Foundation (NSF, China)China31800621
National Science Foundation (NSF, China)China31770796
National Science Foundation (NSF, China)China31971178
National Science Foundation (NSF, China)China81872915
National Science Foundation (NSF, China)China82073904
National Science Foundation (NSF, China)China31825010
National Science Foundation (NSF, China)China81525024

Revision History  (Full details and data files)

  • Version 1.0: 2021-10-13
    Type: Initial release
  • Version 1.1: 2022-02-16
    Changes: Database references