6PT0

Cryo-EM structure of human cannabinoid receptor 2-Gi protein in complex with agonist WIN 55,212-2


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 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

Cryo-EM Structure of the Human Cannabinoid Receptor CB2-GiSignaling Complex.

Xing, C.Zhuang, Y.Xu, T.H.Feng, Z.Zhou, X.E.Chen, M.Wang, L.Meng, X.Xue, Y.Wang, J.Liu, H.McGuire, T.F.Zhao, G.Melcher, K.Zhang, C.Xu, H.E.Xie, X.Q.

(2020) Cell 180: 645

  • DOI: 10.1016/j.cell.2020.01.007
  • Primary Citation of Related Structures:  
    6PT0

  • PubMed Abstract: 
  • Drugs selectively targeting CB2 hold promise for treating neurodegenerative disorders, inflammation, and pain while avoiding psychotropic side effects mediated by CB1. The mechanisms underlying CB2 activation and signaling are poorly understood but critical for drug design ...

    Drugs selectively targeting CB2 hold promise for treating neurodegenerative disorders, inflammation, and pain while avoiding psychotropic side effects mediated by CB1. The mechanisms underlying CB2 activation and signaling are poorly understood but critical for drug design. Here we report the cryo-EM structure of the human CB2-G i signaling complex bound to the agonist WIN 55,212-2. The 3D structure reveals the binding mode of WIN 55,212-2 and structural determinants for distinguishing CB2 agonists from antagonists, which are supported by a pair of rationally designed agonist and antagonist. Further structural analyses with computational docking results uncover the differences between CB2 and CB1 in receptor activation, ligand recognition, and G i coupling. These findings are expected to facilitate rational structure-based discovery of drugs targeting the cannabinoid system.


    Organizational Affiliation

    Department of Pharmaceutical Sciences, Computational Chemical Genomics Screen Center, School of Pharmacy, and NIDA National Center of Excellence for Computational Drug Abuse Research, University of Pittsburgh, Pittsburgh, PA 15261, USA; Drug Discovery Institute and Departments of Computational Biology and of Structural Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA. Electronic address: xix15@pitt.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cannabinoid receptor 2A [auth R]369Homo sapiensMutation(s): 0 
Gene Names: CNR2CB2ACB2B
Membrane Entity: Yes 
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Find proteins for P34972 (Homo sapiens)
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PHAROS:  P34972
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(i) subunit alpha-1B [auth A]354Homo sapiensMutation(s): 4 
Gene Names: GNAI1
Membrane Entity: Yes 
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1C [auth B]354Homo sapiensMutation(s): 0 
Gene Names: GNB1
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PHAROS:  P62873
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2D [auth C]68Homo sapiensMutation(s): 0 
Gene Names: GNG2
Membrane Entity: Yes 
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PHAROS:  P59768
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
scFv16E259synthetic constructMutation(s): 0 
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Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
WI5 BindingDB:  6PT0 Ki: min: 0.28, max: 70 (nM) from 31 assay(s)
IC50: min: 1.1, max: 15.7 (nM) from 5 assay(s)
EC50: min: 0.39, max: 124.5 (nM) from 13 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA)United StatesP30 DA035778A1
National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA)United StatesR01 DA025612
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)United States1R35GM128641
Ministry of Science and Technology (MoST, China)ChinaXDB08020303
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United States1R01GM127710
Jay and Betty Van Andel FoundationUnited States--

Revision History  (Full details and data files)

  • Version 1.0: 2020-02-12
    Type: Initial release
  • Version 1.1: 2020-03-04
    Changes: Database references