6OIJ

Muscarinic acetylcholine receptor 1-G11 protein complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.4 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: https://doi.org/10.1126/science.aaw5188
  • Primary Citation of Related Structures:  
    6OIJ, 6OIK

  • 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 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 Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein subunit alpha-11353Homo sapiensMutation(s): 0 
Gene Names: GNAI1GNA11GA11
EC: 3.6.5
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P29992 (Homo sapiens)
Explore P29992 
Go to UniProtKB:  P29992
PHAROS:  P29992
GTEx:  ENSG00000088256 
Find proteins for A0A3B3ITX3 (Homo sapiens)
Explore A0A3B3ITX3 
Go to UniProtKB:  A0A3B3ITX3
GTEx:  ENSG00000127955 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP29992A0A3B3ITX3
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Muscarinic acetylcholine receptor M1B [auth R]363Homo sapiensMutation(s): 3 
Gene Names: CHRM1
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P11229 (Homo sapiens)
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Go to UniProtKB:  P11229
PHAROS:  P11229
GTEx:  ENSG00000168539 
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UniProt GroupP11229
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Antibody fragmentC [auth H]256Mus musculusMutation(s): 0 
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1D [auth B]345Homo sapiensMutation(s): 0 
Gene Names: GNB1
UniProt & NIH Common Fund Data Resources
Find proteins for P62873 (Homo sapiens)
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PHAROS:  P62873
GTEx:  ENSG00000078369 
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UniProt GroupP62873
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2E [auth G]71Homo sapiensMutation(s): 0 
Gene Names: GNG2
Membrane Entity: Yes 
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Find proteins for P59768 (Homo sapiens)
Explore P59768 
Go to UniProtKB:  P59768
PHAROS:  P59768
GTEx:  ENSG00000186469 
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UniProt GroupP59768
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  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
IXO BindingDB:  6OIJ Ki: 350 (nM) from 1 assay(s)
Kd: 2138 (nM) from 1 assay(s)
IC50: 1.3 (nM) from 1 assay(s)
EC50: 2 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM083118

Revision History  (Full details and data files)

  • Version 1.0: 2019-05-08
    Type: Initial release
  • Version 1.1: 2019-05-22
    Changes: Data collection, Database references
  • Version 1.2: 2019-05-29
    Changes: Data collection, Database references
  • Version 1.3: 2020-01-08
    Changes: Author supporting evidence
  • Version 1.4: 2024-11-20
    Changes: Data collection, Database references, Structure summary