Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 5-mer - A1B1C1D1E1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 152.91 kDa 
• Atom Count: 8,555 
• Modelled Residue Count: 1,126 
• Deposited Residue Count: 1,379 
• Unique protein chains: 5

 7T8X

Cryo-EM structure of ACh-bound M2R-Go signaling complex in S1 state

• PDB DOI: 10.2210/pdb7T8X/pdb
• EM Map EMD-25748: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens, Mus musculus
• Expression System: Spodoptera frugiperda, Trichoplusia ni
• Mutation(s): Yes 
• Membrane Protein: Yes  PDBTM


• Deposited: 2021-12-17 Released: 2023-01-25 
• Deposition Author(s): Xu, J., Wang, Q., Du, Y., Kobilka, B.K.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.21 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM structure of ACh-bound M2R-Go signaling complex in S1 state

Xu, J., Wang, Q., Du, Y., Kobilka, B.K.

To be published.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Muscarinic acetylcholine receptor M2,muscarinic acetylcholine receptor M2 chimera	A	353	Homo sapiens	Mutation(s): 0  Gene Names: CHRM2 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P08172 (Homo sapiens) Explore P08172  Go to UniProtKB:  P08172
PHAROS:  P08172

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(o) subunit alpha	B	354	Homo sapiens	Mutation(s): 4  Gene Names: GNAO1 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P09471 (Homo sapiens) Explore P09471  Go to UniProtKB:  P09471
PHAROS:  P09471

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	C	345	Homo sapiens	Mutation(s): 0  Gene Names: GNB1
UniProt & NIH Common Fund Data Resources
Find proteins for P62873 (Homo sapiens) Explore P62873  Go to UniProtKB:  P62873
PHAROS:  P62873

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	D	71	Homo sapiens	Mutation(s): 0  Gene Names: GNG2 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P59768 (Homo sapiens) Explore P59768  Go to UniProtKB:  P59768
PHAROS:  P59768

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Antibody fragment	E	256	Mus musculus	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ACH (Subject of Investigation/LOI)	F [auth A]	ACETYLCHOLINE C7 H16 N O2 OIPILFWXSMYKGL-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.21 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-01-25 
Deposition Author(s): Xu, J., Wang, Q., Du, Y., Kobilka, B.K.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2023-01-25
  Type: Initial release