6D9H

Cryo-EM structure of the human adenosine A1 receptor-Gi2-protein complex bound to its endogenous agonist


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.6 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the adenosine-bound human adenosine A1receptor-Gicomplex.

Draper-Joyce, C.J.Khoshouei, M.Thal, D.M.Liang, Y.L.Nguyen, A.T.N.Furness, S.G.B.Venugopal, H.Baltos, J.A.Plitzko, J.M.Danev, R.Baumeister, W.May, L.T.Wootten, D.Sexton, P.M.Glukhova, A.Christopoulos, A.

(2018) Nature 558: 559-563

  • DOI: 10.1038/s41586-018-0236-6

  • PubMed Abstract: 
  • The class A adenosine A <sub>1 </sub> receptor (A <sub>1 </sub>R) is a G-protein-coupled receptor that preferentially couples to inhibitory G <sub>i/o </sub> heterotrimeric G proteins, has been implicated in numerous diseases, yet remains poorly targ ...

    The class A adenosine A 1 receptor (A 1 R) is a G-protein-coupled receptor that preferentially couples to inhibitory G i/o heterotrimeric G proteins, has been implicated in numerous diseases, yet remains poorly targeted. Here we report the 3.6 Å structure of the human A 1 R in complex with adenosine and heterotrimeric G i2 protein determined by Volta phase plate cryo-electron microscopy. Compared to inactive A 1 R, there is contraction at the extracellular surface in the orthosteric binding site mediated via movement of transmembrane domains 1 and 2. At the intracellular surface, the G protein engages the A 1 R primarily via amino acids in the C terminus of the Gα i α5-helix, concomitant with a 10.5 Å outward movement of the A 1 R transmembrane domain 6. Comparison with the agonist-bound β 2 adrenergic receptor-G s -protein complex reveals distinct orientations for each G-protein subtype upon engagement with its receptor. This active A 1 R structure provides molecular insights into receptor and G-protein selectivity.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia.,Drug Discovery Biology and Department of Pharmacology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia. arthur.christopoulos@monash.edu.,Novartis Institutes for Biomedical Research, Novartis Pharma AG, Basel, Switzerland.,Drug Discovery Biology and Department of Pharmacology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia. patrick.sexton@monash.edu.,Drug Discovery Biology and Department of Pharmacology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia.,School of Pharmacy, Fudan University, Shanghai, China. patrick.sexton@monash.edu.,Drug Discovery Biology and Department of Pharmacology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia. alisa.glukhova@monash.edu.,Department of Molecular Structural Biology, Max Planck Institute of Biochemistry, Martinsried, Germany.,School of Pharmacy, Fudan University, Shanghai, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide-binding protein G(i) subunit alpha-2
A
355Homo sapiensMutation(s): 4 
Gene Names: GNAI2 (GNAI2B)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
A1 adenosine receptor
Find proteins for P04899 (Homo sapiens)
Go to Gene View: GNAI2
Go to UniProtKB:  P04899
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
B
350Homo sapiensMutation(s): 0 
Gene Names: GNB1
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
A1 adenosine receptor
Find proteins for P62873 (Homo sapiens)
Go to Gene View: GNB1
Go to UniProtKB:  P62873
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
G
71Homo sapiensMutation(s): 0 
Gene Names: GNG2
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
A1 adenosine receptor
Find proteins for P59768 (Homo sapiens)
Go to Gene View: GNG2
Go to UniProtKB:  P59768
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Chimera protein of Muscarinic acetylcholine receptor M4 and Adenosine receptor A1
R
389Homo sapiensMutation(s): 0 
Gene Names: ADORA1, CHRM4
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 P08173 (Homo sapiens)
Go to Gene View: CHRM4
Go to UniProtKB:  P08173
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADN
Query on ADN

Download SDF File 
Download CCD File 
R
ADENOSINE
C10 H13 N5 O4
OIRDTQYFTABQOQ-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.6 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2018-06-20
    Type: Initial release
  • Version 1.1: 2018-07-04
    Type: Data collection, Database references
  • Version 1.2: 2018-07-11
    Type: Data collection, Database references