SWELL1, a plasma membrane protein, is an essential component of volume-regulated anion channel.
SWELL1, a plasma membrane protein, is an essential component of volume-regulated anion channel.
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Swell1是一种质膜蛋白,是体积调节阴离子通道的重要组成部分。
DOI:
10.1016/j.cell.2014.03.024
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发表时间:
2014-04-10
期刊:
影响因子:
64.5
通讯作者:
Patapoutian A
中科院分区:
文献类型:
--
作者:
Qiu Z;Dubin AE;Mathur J;Tu B;Reddy K;Miraglia LJ;Reinhardt J;Orth AP;Patapoutian A
Maintenance of a constant cell volume in response to extracellular or intracellular osmotic changes is critical for cellular homeostasis. Activation of a ubiquitous volume-regulated anion channel (VRAC) plays a key role in this process; however, its molecular identity in vertebrates remains unknown. Here, we used a cell-based fluorescence assay and performed a genome-wide RNAi screen to find components of VRAC. We identified SWELL1 (LRRC8A), a member of a four-transmembrane protein family with unknown function, as essential for hypotonicity-induced iodide influx. SWELL1 is localized to the plasma membrane, and its knockdown dramatically reduces endogenous VRAC currents and regulatory cell volume decrease in various cell types. Furthermore, point mutations in SWELL1 cause a significant change in VRAC anion selectivity, demonstrating that SWELL1 is an essential VRAC component. These findings enable further molecular characterization of the VRAC channel complex and genetic studies for understanding the function of VRAC in normal physiology and disease.
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影响因子:
16.2
作者:
Schmidt, Manuela;Dubin, Adrienne E.;Petrus, Matt J.;Earley, Taryn J.;Patapoutian, Ardem
通讯作者:
Patapoutian, Ardem
影响因子:
3.8
作者:
LEWIS, RS;ROSS, PE;CAHALAN, MD
通讯作者:
CAHALAN, MD
DOI:
10.1080/07315724.2007.10719667
发表时间:
2007-10-01
影响因子:
3.5
作者:
Lang, Florian
通讯作者:
Lang, Florian
影响因子:
21.3
作者:
Cahalan, Michael D.
通讯作者:
Cahalan, Michael D.
影响因子:
3.5
作者:
Galietta, LJV;Haggie, PM;Verkman, AS
通讯作者:
Verkman, AS