Mutational Analysis of Potassium Currents in Drosophila

9604457 Singh这些研究旨在了解钾电流的功能和调节的分子机制，钾电流对许多细胞功能都很重要。果蝇幼虫肌肉有两个电压激活的钾电流和两个钙激活的钾电流。已经对其中两个通道进行了研究，发现有选择性地破坏它们的突变。这位研究人员已经在其他渠道发现了6个突变：破坏IK的Z66突变和影响IA的P40。该项目将对这些基因进行克隆和测序。这些信息将表明基因产物的性质，以及它们是通道的结构亚单位还是它们的调节器。还将对P40突变体进行电生理学研究，以确认该基因的定位，并提供有关IA通道功能的信息。这些研究将为我们理解这些钾通道提供重要的信息。%K+通道在多种细胞过程中起着关键作用。果蝇拥有丰富的遗传工具，可用于包括离子通道功能在内的许多生物现象的研究。这一研究结果将有助于理解钾通道的功能和调控的分子机制。***

9604457 Singh These studies are aimed at understanding the molecular mechanisms underlying the function and regulation of potassium currents, which are important for many cellular functions. Larval muscles of Drosophila have two voltage activated and two calcium activated potassium currents. Two of these channels have been investigated with mutations that selectively disrupt them. This investigator has identified 6 mutations in the other channels: the Z66 mutant which disrupts IK, and P40 which affects IA. This project will clone and sequence these genes. This information will indicate the nature of the gene products and whether they are structural subunits of the channels or regulators of them. Electrophysiological studies will also be done with the P40 mutant to confirm the mapping of this gene, and provide information on the functioning of IA channels. These studies will provide important information to aid our understanding of these potassium channels. %%% K+ channels play a key role in a wide variety of cellular processes. With an excellent repertoire of available genetic tools, Drosophila is useful in the study of many biological phenomena including ion channel function. The result of this research will aid in the understanding of the molecular mechanisms involved in the function and regulation of potassium channels. ***