Heteromultimeric CLC chloride channels with novel properties

被引:210
作者
Lorenz, L [1 ]
Pusch, M [1 ]
Jentsch, TJ [1 ]
机构
[1] UNIV HAMBURG, CTR MOL NEUROBIOL, D-20246 HAMBURG, GERMANY
关键词
anion channel; multimers; myotonia; cystic fibrosis; cell volume regulation;
D O I
10.1073/pnas.93.23.13362
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The skeletal muscle chloride channel CLC-1 and the ubiquitous volume-activated chloride channel CLC-2 belong to a large gene family whose members often show overlapping expression patterns. CLC-1 and CLC-2 are coexpressed in skeletal and smooth muscle and in the heart. By coexpressing CLC-1 and CLC-2 in Xenopus oocytes, we now show the formation of novel CLC-1/CLC-2 heterooligomers that yield time-independent linear chloride currents with a chloride --> bromide --> iodide selectivity sequence. Formation of heterooligomeric CLC channels increases the number and possible functions of chloride channels.
引用
收藏
页码:13362 / 13366
页数:5
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