无时无刻的Drosophila类型与伴侣时钟蛋白的共同进化
Enrico Bullo1,2, Ping Chen1,2, Ivan Fiala1
1Biology Centre of the Czech Academy of Sciences, 37005 České Budějovice, Czech Republic.
iScience
|May 5, 2025
概括
草类型无时无刻 (dTIM) 蛋白质的进化揭示了动物血统的重大变化. 它的修改与CRYPTOCHROMES或JETLAG的损失有关,影响昼夜节律调节.
科学领域:
- 进化生物学是进化的生物学.
- 时间生物学 时间生物学
- 分子生物学分子生物学
背景情况:
- 草类型的无时无刻 (dTIM) 对果的昼夜节律和光携带至关重要.
- 它的作用和进化轨迹在不同的昆虫物种之间有很大差异.
研究的目的:
- 在各种动物群体中对dTIM进行全面的遗传学分析.
- 确定dTIM的进化史,包括dTIM的起源,重复和损失事件.
- 为了确定关键的蛋白质领域和表现出实质性的dTIM进化动物血统.
主要方法:
- 在广泛的动物中对dTIM进行了家族遗传学分析.
- 基因起源,重复和损失事件的约会.
- 在dTIM中识别保存和可变蛋白域.
主要成果:
- dTIM进化在很大程度上独立于PER蛋白的变化,即使在皮动物中失去PER.
- dTIM的修改始终与CRYPTOCHROMES或JETLAG的损失相关.
- 在植物和虫中观察到加速的dTIM进化.
- 替代的dTIM拼接,与Drosophila的温度依赖功能相关,在Diptera中显示部分保存,具有独特的修改.
结论:
- 这项研究突出了塑造dTIM在动物王国的主要进化事件.
- dTIM的演变与Cryptochromes和JetLAG的存在/不存在密切相关.
- 了解dTIM进化提供了关于昼夜时钟机制多样化的见解.
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