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Targeted gene knockout of inner arm 1 in Tetrahymena thermophila

机译:嗜热四膜虫内臂1的靶向基因敲除

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摘要

Cilia and flagella contain at least eight different types of dynein arms. It is not entirely clear how the different types of arms are organized along the axoneme. In addition, the role each different type of dynein plays in ciliary or flagellar motility is not known. To initiate studies of dynein organization and function in cilia, we have introduced a mutation into one dynein heavy chain gene (DYH6) in Tetrahymena thermophila by targeted gene knockout. We have generated mutant cells that lack wild-type copies of the DYH6 gene. We have shown that the DYH6 gene encodes one heavy chain (HC2) of Tetrahymena 18S dynein and that 18S dynein occupies the I1 position in the ciliary axoneme. We have also shown that Tetrahymena I1 is required for normal motility, normal feeding and normal doubling rate.
机译:纤毛和鞭毛含有至少八种不同类型的达因臂。目前还不清楚沿轴突如何组织不同类型的手臂。此外,尚不清楚每种不同类型的动力蛋白在睫状或鞭毛运动中所起的作用。为了开始研究纤毛中达因的组织和功能,我们通过靶向基因敲除将突变引入嗜热四膜虫中的一个达因重链基因(DYH6)。我们已经生成了缺少DYH6基因野生型拷贝的突变细胞。我们已经显示,DYH6基因编码四膜虫18S达因的一条重链(HC2),并且18S达因在睫状轴突中占据I1位置。我们还显示四肢膜炎I1是正常运动,正常进食和正常加倍速度所必需的。

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