CRACM1是一种血蛋白,对于存储的Ca2+进入至关重要
1Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA. mvig@bidmc.harvard.edu
概括
研究人员选了抑制商店运营流入的蛋白质. 他们确定CRACM1和CRACM2是释激活通道 (CRAC) 的关键调节器,可能揭示了这种必不可少的细胞过程的新组成部分.
科学领域:
- 细胞生物学 细胞生物学
- 离子通道生理学 离子通道生理学
- 分子遗传学 分子遗传学
背景情况:
- 储存运行的进入是细胞信号传输的关键过程,由释放激活 (CRAC) 通道介导.
- 在细胞内储量耗尽后,CRAC通道被激活,调节各种细胞功能.
研究的目的:
- 通过全基因组RNA干扰屏幕识别调节储存流入的新型蛋白质.
- 描述已识别的调节器,特别是CRACM1和CRACM2在CRAC通道的功能中的作用.
主要方法:
- 在多索菲拉细胞中进行全基因组RNA干扰 (RNAi) 查,以确定储存运行的流入的抑制蛋白质.
- 补丁电生理学用于选Drosophila CRAC电流的调节器.
- 描述CRACM1的人类正向的特征,包括其局部化和对CRAC电流的影响.
主要成果:
- 一个全基因组RNAi选识别了抑制储存运行的流入的蛋白质.
- 鉴定出CRACM1和CRACM2是Drosophila CRAC电流的调节器.
- 击倒CRACM1干扰了CRAC电流激活,这表明它参与了CRAC通道功能.
结论:
- CRACM1是一种血居住蛋白,参与调节CRAC通道活性.
- CRACM1可能代表CRAC通道本身,一个子单元,或相关的信号机器的组件.
- 这些发现为分子成分和调节储存运行的进入提供了新的见解.
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