9IQV | pdb_00009iqv

Cryo-EM structure of MT3-alpha1AAR

• PDB DOI: https://doi.org/10.2210/pdb9IQV/pdb
• EM Map EMD-60796: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Dendroaspis angusticeps, Homo sapiens, synthetic construct
• Expression System: Homo sapiens
• Mutation(s): No 
• Membrane Protein: Yes  MemProtMD


• Deposited: 2024-07-13 Released: 2025-07-23 
• Deposition Author(s): Zhong, Y.X., Tao, H.H., Tao, Y.Y.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

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

Literature

Cryo-EM structure of MT3-alpha2AAR

Zhong, Y.X., Tao, H.H., Tao, Y.Y.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 56.37 kDa 
• Atom Count: 2,662 
• Modeled Residue Count: 338 
• Deposited Residue Count: 505 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Muscarinic toxin 3	A	65	Dendroaspis angusticeps	Mutation(s): 0
UniProt
Find proteins for P81031 (Dendroaspis angusticeps) Explore P81031  Go to UniProtKB:  P81031

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Alpha-1A adrenergic receptor,Soluble cytochrome b562	B	440	Homo sapiens, synthetic construct	Mutation(s): 0  Gene Names: ADRA1A, ADRA1C Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P35348 (Homo sapiens) Explore P35348  Go to UniProtKB:  P35348
PHAROS:  P35348 GTEx:  ENSG00000120907

Experimental Data & Validation

Experimental Data

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-07-23 
Deposition Author(s): Zhong, Y.X., Tao, H.H., Tao, Y.Y.

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

Revision History  

• Version 1.0: 2025-07-23
  Type: Initial release