9P91 | pdb_00009p91

Avian TRPM8 (Parus major) semi-swapped, ligand-free structure resolved in cell vesicles using cryo-EM

• PDB DOI: https://doi.org/10.2210/pdb9P91/pdb
• EM Map EMD-71395: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Parus major
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2025-06-23 Released: 2026-03-25 
• Deposition Author(s): Choi, K.Y., Lin, X., Cheng, Y., Julius, D.
• Funding Organization(s): Howard Hughes Medical Institute (HHMI), National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS), National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.00 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structural energetics of cold sensitivity

Choi, K.Y., Lin, X., Cheng, Y., Julius, D.

(2026) Nature 

• DOI: https://doi.org/10.1038/s41586-026-10276-2

Biological Assembly 1  

Global Symmetry: Cyclic - C4  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 508.87 kDa 
• Atom Count: 31,088 
• Modeled Residue Count: 3,896 
• Deposited Residue Count: 4,404 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Transient receptor potential cation channel subfamily M member 8	A, B, C, D	1,101	Parus major	Mutation(s): 0
UniProt
Find proteins for A0A5S8WF66 (Parus major) Explore A0A5S8WF66  Go to UniProtKB:  A0A5S8WF66

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.00 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.21.2_5419
RECONSTRUCTION	RELION	5

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2026-03-25 
Deposition Author(s): Choi, K.Y., Lin, X., Cheng, Y., Julius, D.

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Funding Organization	Location	Grant Number
Howard Hughes Medical Institute (HHMI)	United States	--
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)	United States	R35NS105038
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	R35GM140847

Revision History  

• Version 1.0: 2026-03-25
  Type: Initial release