TRP和TRPL的联合组装产生了一个独特的商店运行的导电性
1Department of Biological Chemistry, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA.
Cell
|June 27, 1997
概括
短暂受体潜力 (TRP) 和TRP样蛋白 (TRPL) 形成了新的离子通道. 同表达揭示了Drosophila光受体中介于存储运行的电流的异质多重通道.
科学领域:
- 分子和细胞生物学分子和细胞生物学
- 神经科学是一个神经科学.
- 离子通道生理学 离子通道生理学
背景情况:
- 甲虫视网膜特异性蛋白质,短暂受体潜力 (TRP),是保存存储运行通道 (SOC) 家族的创始成员.
- 实验室研究表明,TRP作为SOC,而相关的蛋白质TRPL则具有构成性活性.
研究的目的:
- 研究共同表达TRP和TRPL蛋白的功能后果.
- 为了确定Drosophila光受体细胞中光激活电流背后的机制.
主要方法:
- 在一个合适的表达系统中,TRP和TRPL的同时表达.
- 电生理学记录以表征离子通道电流.
- 蛋白相互作用研究以评估TRP-TRPL关联.
主要成果:
- TRP和TRPL的共同表达产生了一个独特的存储运行,向外调整的电流,与单独由TRP或TRPL产生的电流不同.
- 证实了TRP和TRPL子单元之间的直接相互作用.
- 观察到的电流是由TRP和TRPL形成的异构多重通道介导的.
结论:
- TRP和TRPL蛋白直接相互作用,形成功能异多元道.
- 这些TRP-TRPL异质多元体有助于储存光受体细胞中的电流.
- 光受体中的光激活电流很可能是TRP同聚合物和TRP-TRPL异聚合物的组合造成的.
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