7XJA | pdb_00007xja

TMD masked refine map of human ClC-2

• PDB DOI: https://doi.org/10.2210/pdb7XJA/pdb
• EM Map EMD-33223: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): No 
• Membrane Protein: Yes  OPMPDBTMMemProtMDmpstruc


• Deposited: 2022-04-15 Released: 2023-05-17 
• Deposition Author(s): Wang, L.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.50 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM structures of ClC-2 chloride channel reveal the blocking mechanism of its specific inhibitor AK-42

Ma, T., Wang, L., Chai, A., Liu, C., Cui, W., Yuan, S., Wing Ngor Au, S., Sun, L., Zhang, X., Zhang, Z., Lu, J., Gao, Y., Wang, P., Li, Z., Liang, Y., Vogel, H., Wang, Y.T., Wang, D., Yan, K., Zhang, H.

(2023) Nat Commun 14: 3424

• DOI: https://doi.org/10.1038/s41467-023-39218-6

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 197.28 kDa 
• Atom Count: 7,276 
• Modeled Residue Count: 944 
• Deposited Residue Count: 1,796 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chloride channel protein 2	A, B	898	Homo sapiens	Mutation(s): 0  Gene Names: CLCN2 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P51788 (Homo sapiens) Explore P51788  Go to UniProtKB:  P51788
PHAROS:  P51788 GTEx:  ENSG00000114859

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.50 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: 2023-05-17 
Deposition Author(s): Wang, L.

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

Revision History  

• Version 1.0: 2023-05-17
  Type: Initial release
  
• Version 1.1: 2023-11-15
  Changes: Data collection, Database references
• Version 1.2: 2025-06-25
  Changes: Data collection, Structure summary