7F8Y

Crystal structure of the cholecystokinin receptor CCKAR in complex with devazepide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.220 

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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: 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 ...

    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

    Zhongshan Institute for Drug Discovery, The Institutes of Drug Discovery and Development, Chinese Aacademy of Sciences, Guangdong, China. zhaoq@simm.ac.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
fusion protein of Cholecystokinin receptor type A and EndolysinA534Homo sapiensEscherichia virus T4Mutation(s): 6 
Gene Names: CCKARCCKRAE
EC: 3.2.1.17
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P32238 (Homo sapiens)
Explore P32238 
Go to UniProtKB:  P32238
PHAROS:  P32238
Find proteins for P00720 (Enterobacteria phage T4)
Explore P00720 
Go to UniProtKB:  P00720
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP32238P00720
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
1OZ (Subject of Investigation/LOI)
Query on 1OZ

Download Ideal Coordinates CCD File 
B [auth A]N-[(3S)-1-methyl-2-oxidanylidene-5-phenyl-3H-1,4-benzodiazepin-3-yl]-1H-indole-2-carboxamide
C25 H20 N4 O2
NFHRQQKPEBFUJK-HSZRJFAPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.220 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.78α = 90
b = 72.42β = 107.284
c = 86.14γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


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