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自私的中间体分子作弊的分子策略
Takashi Akera1, Emily Trimm1, Michael A Lampson1
1Department of Biology, School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA 19104, USA.
Cell
|August 13, 2019
概括
雌性半导体中自私的中间体演变为偏差遗传. 它们使用分子途径从螺旋小管中脱离,但不同的机制进化以增加这种活动,表明介质时间作为抑制剂.
科学领域:
- 遗传学
- 细胞生物学
- 进化生物学
背景情况:
- 雌性半球分裂涉及不对称的分裂,为自私的中间体施加压力,使其偏向向卵子传播.
- 这种中间体驱动器解释了中间体DNA和相关蛋白质的快速演变,尽管中间体功能被保留了.
研究的目的:
- 定义扩展的中粒体促进自私的中粒体驱动的分子途径.
- 通过混合小鼠模型,研究体驱动机制在物种之间如何不同.
主要方法:
- 定义了将扩展的中间体连接到基因组酸化和微管不稳定因素的分子通路.
- 在两种杂交小鼠模型中利用了跨物种的中间体分歧来研究驱动机制.
- 分析了 meiotic 进展和中心分子驱动之间的关系.
主要成果:
- 确定了扩张的中间体招募微管不稳定因子的途径,从而导致从线圈微管脱离.
- 证明杂交小鼠中的自私的中间体使用这种途径,但以不同的方式调节它以丰富破坏稳定的因素.
- 显示增加微管的破坏活性是一种常见的驱动策略,通过不同的中心运动机制实现.
结论:
- 增加微管的破坏活动是中心分子驱动的一般策略.
- 中粒体已经发展出不同的机制来增强微管破坏稳定的活性.
- 中核驱动依赖于减缓的介质进展,表明介质时间作为潜在的抑制剂.
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