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Updated: Aug 5, 2026
13:07
One-channel Cell-attached Patch-clamp Recording
Published on: June 9, 2014
Locking the TMEM16A chloride channel into its conductive state
1School of Life Sciences, Nanjing Medical University , Changzhou, China.
The Journal of General Physiology
|July 30, 2026
Summary
A hydrophobic patch connecting TM4 remodeling to TMEM16A channel gating was identified. This finding provides insights into the TMEM16 family
Area of Science:
- Biochemistry
- Molecular Biology
- Structural Biology
Background:
- The TMEM16A channel is a crucial ion channel involved in various physiological processes.
- Understanding the molecular mechanisms of TMEM16A gating is essential for therapeutic development.
- The TMEM16 family comprises structurally related proteins with diverse functions.
Purpose of the Study:
- To elucidate the structural basis of TMEM16A channel gating.
- To investigate the role of the TM3-TM4 interface in channel function.
- To understand the evolutionary divergence within the TMEM16 family.
Main Methods:
- X-ray crystallography
- Cryo-electron microscopy
- Biochemical assays
- Mutagenesis studies
Main Results:
- A novel hydrophobic patch at the TM3-TM4 interface was identified.
- This patch was shown to couple TM4 remodeling to channel gating.
- Mutations in this patch altered channel activity, supporting its functional importance.
- The findings provide insights into TMEM16 family divergence.
Conclusions:
- The TM3-TM4 hydrophobic patch is a key regulatory element in TMEM16A channel gating.
- Structural insights into this patch mechanism can inform the design of TMEM16A modulators.
- This study contributes to understanding the functional and evolutionary diversity of the TMEM16 protein family.
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