9J0X

Cryo-EM Structure of the Guard Cell Potassium Channel GORK

• PDB DOI: https://doi.org/10.2210/pdb9J0X/pdb
• EM Map EMD-61061: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Arabidopsis thaliana
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2024-08-03 Released: 2025-02-26 
• Deposition Author(s): Zhang, X., Zhang, P.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

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

Literature

GORK K+ channel structure and gating vital for stomatal movements

Zhang, X., Zhang, P.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 378.49 kDa 
• Atom Count: 22,042 
• Modelled Residue Count: 2,714 
• Deposited Residue Count: 3,280 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Potassium channel GORK	A, B, C, D	820	Arabidopsis thaliana	Mutation(s): 0  Gene Names: GORK, At5g37500, MPA22.4
UniProt
Find proteins for Q94A76 (Arabidopsis thaliana) Explore Q94A76  Go to UniProtKB:  Q94A76

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
K (Subject of Investigation/LOI)	E [auth A], F [auth A], G [auth A], H [auth C]	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-02-26 
Deposition Author(s): Zhang, X., Zhang, P.

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

Revision History  

• Version 1.0: 2025-02-26
  Type: Initial release