5UEN

Crystal structure of the human adenosine A1 receptor A1AR-bRIL in complex with the covalent antagonist DU172 at 3.2A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.316 
  • R-Value Work: 0.286 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the Adenosine A1 Receptor Reveals the Basis for Subtype Selectivity.

Glukhova, A.Thal, D.M.Nguyen, A.T.Vecchio, E.A.Jorg, M.Scammells, P.J.May, L.T.Sexton, P.M.Christopoulos, A.

(2017) Cell 168: 867-877.e13

  • DOI: 10.1016/j.cell.2017.01.042

  • PubMed Abstract: 
  • The adenosine A1 receptor (A1-AR) is a G-protein-coupled receptor that plays a vital role in cardiac, renal, and neuronal processes but remains poorly targeted by current drugs. We determined a 3.2 Å crystal structure of the A1-AR bound to the select ...

    The adenosine A1 receptor (A1-AR) is a G-protein-coupled receptor that plays a vital role in cardiac, renal, and neuronal processes but remains poorly targeted by current drugs. We determined a 3.2 Å crystal structure of the A1-AR bound to the selective covalent antagonist, DU172, and identified striking differences to the previously solved adenosine A2A receptor (A2A-AR) structure. Mutational and computational analysis of A1-AR revealed a distinct conformation of the second extracellular loop and a wider extracellular cavity with a secondary binding pocket that can accommodate orthosteric and allosteric ligands. We propose that conformational differences in these regions, rather than amino-acid divergence, underlie drug selectivity between these adenosine receptor subtypes. Our findings provide a molecular basis for AR subtype selectivity with implications for understanding the mechanisms governing allosteric modulation of these receptors, allowing the design of more selective agents for the treatment of ischemia-reperfusion injury, renal pathologies, and neuropathic pain.


    Organizational Affiliation

    Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Adenosine receptor A1,Soluble cytochrome b562,Adenosine receptor A1
A, B
416Homo sapiensEscherichia coli
This entity is chimeric
Mutation(s): 1 
Gene Names: ADORA1, cybC
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
A1 adenosine receptor
Find proteins for P30542 (Homo sapiens)
Go to Gene View: ADORA1
Go to UniProtKB:  P30542
Find proteins for P0ABE7 (Escherichia coli)
Go to UniProtKB:  P0ABE7
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DU1
Query on DU1

Download SDF File 
Download CCD File 
A, B
4-{[3-(8-cyclohexyl-2,6-dioxo-1-propyl-1,2,6,7-tetrahydro-3H-purin-3-yl)propyl]carbamoyl}benzene-1-sulfonyl fluoride
C24 H30 F N5 O5 S
KAJVJPLKXGLLDA-UHFFFAOYSA-N
 Ligand Interaction
OLA
Query on OLA

Download SDF File 
Download CCD File 
A, B
OLEIC ACID
C18 H34 O2
ZQPPMHVWECSIRJ-KTKRTIGZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.316 
  • R-Value Work: 0.286 
  • Space Group: P 2 21 21
Unit Cell:
Length (Å)Angle (°)
a = 96.492α = 90.00
b = 112.960β = 90.00
c = 124.171γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
PDB_EXTRACTdata extraction
Aimlessdata scaling
REFMACrefinement
PHASERphasing
Cootmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Health and Medical Research Council (Australia)AustraliaAPP10552134
National Health and Medical Research Council (Australia)AustraliaAPP1084246

Revision History 

  • Version 1.0: 2017-03-01
    Type: Initial release
  • Version 1.1: 2017-03-15
    Type: Database references
  • Version 1.2: 2017-09-27
    Type: Author supporting evidence, Data collection