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Recent progress in structural studies on TMEM16A channel.

Sai Shi1,2,3, Chunli Pang3, Shuai Guo1,2,3

  • 1State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300401, China.

Computational and Structural Biotechnology Journal
|April 8, 2020
PubMed
Summary
This summary is machine-generated.

The TMEM16A channel, activated by calcium, is crucial for physiological processes and disease treatment. Recent Cryo-EM structures reveal its gating mechanism, aiding drug development.

Keywords:
CaCCsDrug targetIon channelMolecular mechanismStructureTMEM16A

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Area of Science:

  • Molecular biology
  • Structural biology
  • Biophysics

Background:

  • The calcium-activated chloride channel, TMEM16A, plays vital roles in numerous physiological processes.
  • TMEM16A is implicated in diseases including hypertension, pain, cystic fibrosis, and lung cancer.
  • Understanding TMEM16A structure is key to elucidating its function and pathological involvement.

Purpose of the Study:

  • To review the structural basis of TMEM16A gating and permeation.
  • To elucidate the molecular mechanisms underlying TMEM16A channel function.
  • To provide a foundation for developing TMEM16A-targeting therapeutics.

Main Methods:

  • Analysis of recent Cryo-electron microscopy (Cryo-EM) structures of TMEM16A.
  • Integration of structural data with functional and biophysical studies.
  • Review of literature on TMEM16A gating and permeation mechanisms.

Main Results:

  • Cryo-EM studies have provided high-resolution structures of TMEM16A.
  • These structures reveal the intricate details of channel gating and ion permeation pathways.
  • The structural insights explain the calcium and membrane potential dependency of TMEM16A activation.

Conclusions:

  • Structural understanding of TMEM16A is advancing rapidly.
  • Elucidating the gating and permeation mechanisms is crucial for understanding TMEM16A's physiological and pathological roles.
  • This knowledge is essential for the rational design of drugs targeting TMEM16A for various diseases.