9DBR | pdb_00009dbr

Danio rerio TREK-1:CBD complex

• PDB DOI: https://doi.org/10.2210/pdb9DBR/pdb
• EM Map EMD-46725: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Danio rerio
• Expression System: Komagataella pastoris
• Mutation(s): Yes 


• Deposited: 2024-08-23 Released: 2025-09-17 
• Deposition Author(s): Docter, T., Brohawn, S.G.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.94 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cannabinoid inhibition of mechanosensitive K+ channels

Docter, T., Sorum, B., Deshmane, R., Doubvravsky, C., Brohawn, S.G.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 73.72 kDa 
• Atom Count: 4,037 
• Modeled Residue Count: 510 
• Deposited Residue Count: 662 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Potassium channel subfamily K member 2	A, B	331	Danio rerio	Mutation(s): 2  Gene Names: kcnk2a
UniProt
Find proteins for F1QAI2 (Danio rerio) Explore F1QAI2  Go to UniProtKB:  F1QAI2

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
P0T (Subject of Investigation/LOI)	E [auth A]	cannabidiol C21 H30 O2 QHMBSVQNZZTUGM-ZWKOTPCHSA-N
K	C [auth A], D [auth A]	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.94 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-09-17 
Deposition Author(s): Docter, T., Brohawn, S.G.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	GM145869

Revision History  

• Version 1.0: 2025-09-17
  Type: Initial release