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植物中SSR1同类的功能性保存

Jibenben Xia¹, Rong Ma¹, Yuanyuan Cai¹

¹College of life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, 310018, China.

Plant physiology and biochemistry : PPB

|April 8, 2025

概括

植物特异性线粒体蛋白SSR1 (短而胀的根1) 和其同类物在植物进化过程中功能性地保存. 这些蛋白质维持线粒体功能,对于植物发育和早期植物谱系的应激反应至关重要.

科学领域:

植物生物学植物生物学
线粒体功能的功能
进化生物学进化生物学

背景情况:

AtSSR1是一种植物特异性基因,编码了线粒体功能必不可少的线粒体蛋白质.
植物王国中SSR1的进化历史和功能性保护在很大程度上是未知的.

研究的目的:

研究各种植物物种中SSR1同类物质的结构和功能保存.
了解植物系中SSR1功能的进化轨迹.

主要方法:

从七种代表性植物物种中克隆SSR1同类物种.
生物信息分析用于预测线粒体局部化和TPR域识别.
在Arabidopsis ssr1-2淘汰突变体中进行功能救援测试.
在体外拉下测试以评估与线粒体蛋白的相互作用.

主要成果:

在各种植物物种中发现了具有TPR域的SSR1同类物,其中大多数预测为线粒体局部化.
所有克隆的SSR1同类物都成功地拯救了Arabidopsis中的突变表型,证明了功能性保护.
SSR1同类物与线粒体铁-硫集群组装途径 (AtHSCA2和AtISU1) 的关键组件相互作用.
尽管低序列相同性,SSR1同类共享保存的3D结构,表明功能保存.

结论:

SSR1同类体在维护线粒体功能,植物发育和应激反应方面表现出显著的功能性保护.
SSR1的基本功能很可能是在植物进化早期建立起来的.
SSR1代表了一种保存的线粒体蛋白质,对植物适应和在各种物种中生存至关重要.

关键词:

无生物应激应激是一种非生物应激.功能性保护功能性保护铁硫集群组件组件组件人类遗传学分析短而胀的根122

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