5XR8

Crystal structure of the human CB1 in complex with agonist AM841


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.255 

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history

Literature

Crystal structures of agonist-bound human cannabinoid receptor CB1

Hua, T.Vemuri, K.Nikas, S.P.Laprairie, R.B.Wu, Y.Qu, L.Pu, M.Korde, A.Jiang, S.Ho, J.H.Han, G.W.Ding, K.Li, X.Liu, H.Hanson, M.A.Zhao, S.Bohn, L.M.Makriyannis, A.Stevens, R.C.Liu, Z.J.

(2017) Nature 547: 468-471

  • DOI: 10.1038/nature23272
  • Primary Citation of Related Structures:  5XRA

  • PubMed Abstract: 
  • The cannabinoid receptor 1 (CB1) is the principal target of the psychoactive constituent of marijuana, the partial agonist Δ9-tetrahydrocannabinol (Δ9-THC). Here we report two agonist-bound crystal structures of human CB1 in complex with a tetrahydro ...

    The cannabinoid receptor 1 (CB1) is the principal target of the psychoactive constituent of marijuana, the partial agonist Δ9-tetrahydrocannabinol (Δ9-THC). Here we report two agonist-bound crystal structures of human CB1 in complex with a tetrahydrocannabinol (AM11542) and a hexahydrocannabinol (AM841) at 2.80 Å and 2.95 Å resolution, respectively. The two CB1-agonist complexes reveal important conformational changes in the overall structure, relative to the antagonist-bound state, including a 53% reduction in the volume of the ligand-binding pocket and an increase in the surface area of the G-protein-binding region. In addition, a 'twin toggle switch' of Phe2003.36 and Trp3566.48 (superscripts denote Ballesteros-Weinstein numbering) is experimentally observed and appears to be essential for receptor activation. The structures reveal important insights into the activation mechanism of CB1 and provide a molecular basis for predicting the binding modes of Δ9-THC, and endogenous and synthetic cannabinoids. The plasticity of the binding pocket of CB1 seems to be a common feature among certain class A G-protein-coupled receptors. These findings should inspire the design of chemically diverse ligands with distinct pharmacological properties.


    Organizational Affiliation

    iHuman Institute, ShanghaiTech University, Shanghai 201210, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cannabinoid receptor 1,Flavodoxin,Cannabinoid receptor 1
A
438Homo sapiensDesulfovibrio vulgaris (strain Hildenborough / ATCC 29579 / NCIMB 8303)
This entity is chimeric
Gene Names: CNR1 (CNR),
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
CB1 cannabinoid receptor complexed with stabilizing antagonist AM6538
Find proteins for P21554 (Homo sapiens)
Go to Gene View: CNR1
Go to UniProtKB:  P21554
Find proteins for P00323 (Desulfovibrio vulgaris (strain Hildenborough / ATCC 29579 / NCIMB 8303))
Go to UniProtKB:  P00323
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
8D0
Query on 8D0

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Download CCD File 
A
(6aR,9R,10aR)-3-(8-azanyl-2-methyl-octan-2-yl)-9-(hydroxymethyl)-6,6-dimethyl-6a,7,8,9,10,10a-hexahydrobenzo[c]chromen-1-ol
C25 H41 N O3
IMRFQPBRZWXESL-MISYRCLQSA-N
 Ligand Interaction
FMN
Query on FMN

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Download CCD File 
A
FLAVIN MONONUCLEOTIDE
RIBOFLAVIN MONOPHOSPHATE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N
 Ligand Interaction
PEG
Query on PEG

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Download CCD File 
A
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
CLR
Query on CLR

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Download CCD File 
A
CHOLESTEROL
C27 H46 O
HVYWMOMLDIMFJA-DPAQBDIFSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.255 
  • Space Group: P 21 2 21
Unit Cell:
Length (Å)Angle (°)
a = 66.830α = 90.00
b = 73.610β = 90.00
c = 139.640γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
PHASERphasing
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-07-12
    Type: Initial release
  • Version 1.1: 2017-07-19
    Type: Database references
  • Version 1.2: 2017-08-09
    Type: Database references
  • Version 1.3: 2017-08-16
    Type: Data collection
  • Version 1.4: 2017-10-18
    Type: Author supporting evidence
  • Version 1.5: 2017-11-08
    Type: Source and taxonomy