7F6V

Cryo-EM structure of the human TACAN channel in a closed state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.66 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Cryo-EM structure of the human TACAN in a closed state.

Chen, X.Wang, Y.Li, Y.Lu, X.Chen, J.Li, M.Wen, T.Liu, N.Chang, S.Zhang, X.Yang, X.Shen, Y.

(2022) Cell Rep 38: 110445-110445

  • DOI: https://doi.org/10.1016/j.celrep.2022.110445
  • Primary Citation of Related Structures:  
    7F6V

  • PubMed Abstract: 

    TACAN is an ion channel-like protein that may be involved in sensing mechanical pain. Here, we present the cryo-electron microscopic structure of human TACAN (hTACAN). hTACAN forms a dimer in which each protomer consists of a transmembrane globular domain (TMD) containing six helices and an intracellular domain (ICD) containing two helices. Molecular dynamic simulations suggest that each protomer contains a putative ion conduction pore. A single-point mutation of the key residue Met207 greatly increases membrane pressure-activated currents. In addition, each hTACAN subunit binds one cholesterol molecule. Our data show the molecular assembly of hTACAN and suggest that wild-type hTACAN is in a closed state.


  • Organizational Affiliation

    State Key Laboratory of Medicinal Chemical Biology and College of Life Sciences, Nankai University, Tianjin 300350, China; Frontiers Science Center for Cell Responses, Nankai University, Tianjin 300350, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ion channel TACAN
A, B
343Homo sapiensMutation(s): 0 
Gene Names: TMEM120ATACANTMPIT
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9BXJ8 (Homo sapiens)
Explore Q9BXJ8 
Go to UniProtKB:  Q9BXJ8
PHAROS:  Q9BXJ8
GTEx:  ENSG00000189077 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9BXJ8
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.66 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not fundedChina--

Revision History  (Full details and data files)

  • Version 1.0: 2022-02-16
    Type: Initial release
  • Version 1.1: 2022-03-23
    Changes: Database references
  • Version 1.2: 2024-06-12
    Changes: Data collection, Database references