状动物的管蛋白基因家族中复杂的进化模式,单细胞真核生物具有多样化的微管结构
Hua Su1, Tingting Hao1, Minjie Yu1
1Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Science, South China Normal University, Guangzhou, 510631, China.
BMC biology
|August 12, 2024
概括
从最后一个真核生物共同祖先起源的状动物中的六个状体亚家族 (alpha,beta,gamma,delta,epsilon和zeta) 的进化历史揭示了各种各样的进化模式. 这些模式可能会推动早期真核生物的功能多样化和适应性.
科学领域:
- 进化生物学是进化的生物学.
- 分子进化是分子进化的过程.
- 细胞生物学 细胞生物学
背景情况:
- 图布林是关键的真核细胞骨成分,参与许多细胞过程.
- 状原生体,其古老的血统和广泛的微管状结构,是研究早期真核生物进化的关键模型.
- 状动物类内的和跨越状动物类内的状蛋白基因子家族的进化轨迹在很大程度上仍未被阐明.
研究的目的:
- 为了研究不同状动物物种中蛋白基因家族的进化模式.
- 了解早期真核生物中的蛋白子家族的起源和多样化.
- 为了将管进化与状细胞系和基因组进化相关联.
主要方法:
- 图布林基因家族的家族基因分析.
- 在10个类中的60种状动物物种中比较基因组学和转录学.
- 鉴定突类子家族及其进化史.
主要成果:
- 所有六个管子子子家族 (alpha,beta,gamma,delta,epsilon,zeta) 都可以追溯到最后一个真核生物共同祖先 (LECA).
- 阿尔法,β和马管是无处不在的,而三角管,epsilon和zeta管在一些系中显示出独立损失的证据.
- 玛,三角形,和泽塔管的进化历史与状动物类的原始物相对应,而α和β管的进化有很大的差异.
- 阿尔法和β-tubulin异型被分为一个祖先的LECA组和一个状物特异的分离组,在祖先组中注意到Alveolata特异的扩张.
- 图布林基因家族扩张与全基因组复制 (WGD) 事件一致,在Paramecium*中观察到的扩张比Tetrahymena*更多,特别是在Paramecium aurelia*复合体中.
结论:
- 图布林基因子家族在状原生体中表现出多样化的进化历史.
- 管的复杂进化模式可能有助于功能多样化和适应性.
- 这项研究为早期真核生物进化过程中图林基因家族的进化提供了关键的见解.
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