新的塑体,旧的蛋白质:在类恐龙鞭状体中重复的内共生收购
Anna Mg Novák Vanclová1,2,3, Charlotte Nef4,5, Zoltán Füssy6
1Institut de Biologie de l'École Normale Supérieure (IBENS), École Normale Supérieure, CNRS, INSERM, Université PSL, Paris, France. anna.novak-vanclova@ijm.fr.
EMBO reports
|March 19, 2024
概括
在Kareniaceae家族中的dinoflagellates具有来自Haptophyte endosymbionts的化学塑性蛋白质. 分析揭示了一些物种中的塑体的不同起源,突出了塑体共生中的微进化过程.
科学领域:
- 海洋生物学 海洋生物学
- 进化生物学是进化的生物学.
- 微生物学 微生物学
背景情况:
- 丁诺鞭状体是研究塑性体共生的关键微型核细胞.
- 卡雷尼亚家族的恐龙鞭毛虫具有独特的富可桑丁色素塑,与祖先的丁素色素塑不同.
- 这些塑体由来自各种来源的核编码蛋白质支持,包括细胞内生体和横向基因转移 (LGT).
研究的目的:
- 预测和分析三个属的七种类动物的塑性质蛋白质的进化模式.
- 为了研究平体内共生体对化学蛋白质组的起源和贡献.
- 了解微进化过程在塑造这些蛋白质组中的作用.
主要方法:
- 预测来自七种类动物物种的塑蛋白质组.
- 自动化遗传树构建和分类,以分析进化模式.
- 对塑体基因组序列的分析,以重构蛋白质组数据.
主要成果:
- 一个有限的 haptophyte 信号 (约 10%) 表明在 Chrysochromulinaceae 家庭内有一个共同的起源.
- 这些细胞衍生的蛋白质的功能分布存在显著差异.
- 塑体基因组显示,并非所有现存的类塑体都具有相同的起源;两种物种携带来自不同 haptophyte 序列的塑体.
结论:
- 卡雷尼亚属丁诺鞭状动物的嵌合蛋白质体是由复杂的进化历史形成的,包括内共生和LGT.
- 微进化过程在这些蛋白质组的功能多样化中起着至关重要的作用.
- 这项研究揭示了Kareniaceae家族内的塑原点的独特进化轨迹.
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