可视化动态能力 pili 和DNA捕获在整个长轴的长轴
Jason D Zuke1,2, Rachel Erickson1, Katherine R Hummels3
1Department of Bacteriology, University of Wisconsin - Madison.
bioRxiv : the preprint server for biology
|June 9, 2023
概括
研究人员可视化了Bacillus subtilis competence pili,揭示了它们在自然转化过程中在DNA捕获中的作用. 这些 pili是可收缩的,与DNA相关联,并沿细胞轴分布.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 细菌遗传学 细菌遗传学
背景情况:
- 细菌的自然转化是横向基因转移的关键机制.
- 最初的DNA捕获步骤是由能力 pili 介导的,但它们在 Bacillus subtilis 中的结构仍然没有被可视化.
- 之前的研究依赖于遗传和功能数据来推断囊参与.
结论:
- 这些发现支持Bacillus subtilis转化机制的分布式模型.
- 皮利最初的DNA捕获沿着细胞的长轴发生.
- 随后的DNA处理步骤也可能发生在细胞极之外.
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