9JEA | pdb_00009jea

cryo-EM structure of M1 muscarinic acetylcholine receptor in complex with atropine

• PDB DOI: https://doi.org/10.2210/pdb9JEA/pdb
• EM Map EMD-61411: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2024-09-02 Released: 2025-07-09 
• Deposition Author(s): Gao, K., Zhang, X., Liu, X.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.40 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

cryo-EM structure of M1 muscarinic acetylcholine receptor in complex with atropine

Gao, K., Zhang, X.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 52.12 kDa 
• Atom Count: 2,745 
• Modeled Residue Count: 369 
• Deposited Residue Count: 466 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Muscarinic acetylcholine receptor M1,de novo design protein	A	466	Homo sapiens	Mutation(s): 0  Gene Names: CHRM1
UniProt & NIH Common Fund Data Resources
Find proteins for P11229 (Homo sapiens) Explore P11229  Go to UniProtKB:  P11229
PHAROS:  P11229 GTEx:  ENSG00000168539

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
A1EBT (Subject of Investigation/LOI)	B [auth A]	[(1R,5S)-8-methyl-8-azabicyclo[3.2.1]octan-3-yl] (2S)-3-oxidanyl-2-phenyl-propanoate C17 H23 N O3 RKUNBYITZUJHSG-QKPAOTATSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.40 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-07-09 
Deposition Author(s): Gao, K., Zhang, X., Liu, X.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	81974236

Revision History  

• Version 1.0: 2025-07-09
  Type: Initial release