6OIK

Muscarinic acetylcholine receptor 2-Go complex


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

Structures of the M1 and M2 muscarinic acetylcholine receptor/G-protein complexes.

Maeda, S.Qu, Q.Robertson, M.J.Skiniotis, G.Kobilka, B.K.

(2019) Science 364: 552-557

  • DOI: 10.1126/science.aaw5188
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Muscarinic acetylcholine receptors are G protein-coupled receptors that respond to acetylcholine and play important signaling roles in the nervous system. There are five muscarinic receptor subtypes (M1R to M5R), which, despite sharing a high degree ...

    Muscarinic acetylcholine receptors are G protein-coupled receptors that respond to acetylcholine and play important signaling roles in the nervous system. There are five muscarinic receptor subtypes (M1R to M5R), which, despite sharing a high degree of sequence identity in the transmembrane region, couple to different heterotrimeric GTP-binding proteins (G proteins) to transmit signals. M1R, M3R, and M5R couple to the G q/ 11 family, whereas M2R and M4R couple to the G i/ o family. Here, we present and compare the cryo-electron microscopy structures of M1R in complex with G 11 and M2R in complex with G oA The M1R-G 11 complex exhibits distinct features, including an extended transmembrane helix 5 and carboxyl-terminal receptor tail that interacts with G protein. Detailed analysis of these structures provides a framework for understanding the molecular determinants of G-protein coupling selectivity.


    Organizational Affiliation

    Department of Structural Biology, Stanford University School of Medicine, Stanford, CA, USA.,Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA, USA. yiorgo@stanford.edu kobilka@stanford.edu.,Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Muscarinic acetylcholine receptor M2,Muscarinic acetylcholine receptor M2
R
353Homo sapiensMutation(s): 3 
Gene Names: CHRM2
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
M2 human muscarinic acetylcholine receptor bound to an antagonist
Find proteins for P08172 (Homo sapiens)
Go to Gene View: CHRM2
Go to UniProtKB:  P08172
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide-binding protein G(o) subunit alpha
A
354Homo sapiensMutation(s): 4 
Gene Names: GNAO1
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
M2 human muscarinic acetylcholine receptor bound to an antagonist
Find proteins for P09471 (Homo sapiens)
Go to Gene View: GNAO1
Go to UniProtKB:  P09471
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
B
345Homo sapiensMutation(s): 0 
Gene Names: GNB1
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
M2 human muscarinic acetylcholine receptor bound to an antagonist
Find proteins for P62873 (Homo sapiens)
Go to Gene View: GNB1
Go to UniProtKB:  P62873
Entity ID: 4
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: 
M2 human muscarinic acetylcholine receptor bound to an antagonist
Find proteins for P59768 (Homo sapiens)
Go to Gene View: GNG2
Go to UniProtKB:  P59768
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
Antibody fragment
H
256N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
2CU
Query on 2CU

Download SDF File 
Download CCD File 
R
3-amino-5-chloro-N-cyclopropyl-4-methyl-6-[2-(4-methylpiperazin-1-yl)-2-oxoethoxy]thieno[2,3-b]pyridine-2-carboxamide
C19 H24 Cl N5 O3 S
TYTGOXSAAQWLPJ-UHFFFAOYSA-N
 Ligand Interaction
IXO
Query on IXO

Download SDF File 
Download CCD File 
R
4-(4,5-dihydro-1,2-oxazol-3-yloxy)-N,N,N-trimethylbut-2-yn-1-aminium
Iperoxo
C10 H17 N2 O2
WXXOCGISBCTWPW-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

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

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesR01GM083118

Revision History 

  • Version 1.0: 2019-05-08
    Type: Initial release
  • Version 1.1: 2019-05-22
    Type: Data collection, Database references
  • Version 1.2: 2019-05-29
    Type: Data collection, Database references