5U09

High-resolution crystal structure of the human CB1 cannabinoid receptor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.180 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

High-resolution crystal structure of the human CB1 cannabinoid receptor.

Shao, Z.Yin, J.Chapman, K.Grzemska, M.Clark, L.Wang, J.Rosenbaum, D.M.

(2016) Nature --: --

  • DOI: 10.1038/nature20613
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The human cannabinoid G-protein-coupled receptors (GPCRs) CB1 and CB2 mediate the functional responses to the endocannabinoids anandamide and 2-arachidonyl glycerol (2-AG) and to the widely consumed plant phytocannabinoid Δ <sup>9 </sup>-tetrahydroca ...

    The human cannabinoid G-protein-coupled receptors (GPCRs) CB1 and CB2 mediate the functional responses to the endocannabinoids anandamide and 2-arachidonyl glycerol (2-AG) and to the widely consumed plant phytocannabinoid Δ 9 -tetrahydrocannabinol (THC). The cannabinoid receptors have been the targets of intensive drug discovery efforts, because modulation of these receptors has therapeutic potential to control pain, epilepsy, obesity, and other disorders. Although much progress in understanding the biophysical properties of GPCRs has recently been made, investigations of the molecular mechanisms of the cannabinoids and their receptors have lacked high-resolution structural data. Here we report the use of GPCR engineering and lipidic cubic phase crystallization to determine the structure of the human CB1 receptor bound to the inhibitor taranabant at 2.6-Å resolution. We found that the extracellular surface of CB1, including the highly conserved membrane-proximal N-terminal region, is distinct from those of other lipid-activated GPCRs, forming a critical part of the ligand-binding pocket. Docking studies further demonstrate how this same pocket may accommodate the cannabinoid agonist THC. Our CB1 structure provides an atomic framework for studying cannabinoid receptor function and will aid the design and optimization of therapeutic modulators of the endocannabinoid system.


    Organizational Affiliation

    Department of Biophysics, The University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA.,Green Center for Systems Biology, The University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cannabinoid receptor 1,GlgA glycogen synthase
A
508Pyrococcus abyssi (strain GE5 / Orsay)Homo sapiens
This entity is chimeric
Mutation(s): 1 
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 Q9V2J8 (Pyrococcus abyssi (strain GE5 / Orsay))
Go to UniProtKB:  Q9V2J8
Find proteins for P21554 (Homo sapiens)
Go to Gene View: CNR1
Go to UniProtKB:  P21554
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
PEG
Query on PEG

Download SDF File 
Download CCD File 
A
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
7DY
Query on 7DY

Download SDF File 
Download CCD File 
A
N-[(2S,3S)-4-(4-chlorophenyl)-3-(3-cyanophenyl)butan-2-yl]-2-methyl-2-{[5-(trifluoromethyl)pyridin-2-yl]oxy}propanamide
C27 H25 Cl F3 N3 O2
QLYKJCMUNUWAGO-GAJHUEQPSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
7DYEC50: 2.4 nM (93) BINDINGDB
7DYKi: 0.3 nM (93) BINDINGDB
7DYIC50: 0.3 - 0.9 nM (93) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.180 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 50.652α = 90.00
b = 80.381β = 91.72
c = 81.178γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
PHASERphasing
SCALEPACKdata scaling
HKL-2000data reduction
DENZOdata reduction
HKL-2000data collection
HKL-2000data scaling
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-12-07
    Type: Initial release
  • Version 1.1: 2017-11-22
    Type: Refinement description