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螺旋在植物防御蛋白转化过程中清除障碍物

Liyuan You¹, Cuilan Shi¹, Daowen Wang¹

¹State Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, and Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou 450002, China.

Trends in biochemical sciences

|November 3, 2023

概括

植物螺旋体在病原体攻击期间解开RNA针头,使关键防御蛋白质的翻译成为可能. 这种机制涉及绕过上游开放读取框架 (uORFs),在所有物种中保存,包括哺乳动物.

科学领域:

分子生物学分子生物学
植物科学植物科学
生物化学生化学

背景情况:

植物在识别病原体时激活防御机制.
转化控制在压力反应期间调节基因表达起着至关重要的作用.
上游开放阅读框架 (uORF) 可以调节下游编码序列的翻译.

研究的目的:

阐明植物螺旋酶在病原体攻击期间的翻译重编程中的作用.
研究病原体诱导的酶促进防御蛋白的翻译的机制.
探索植物和哺乳动物之间这种转化控制机制的保护.

主要方法:

在防御基因的5'未翻译区域中分析RNA毛结构.
研究病原体诱导的酶在这些RNA结构上的活性.
核糖体分析和翻译试验用于监测蛋白质合成.
植物和哺乳动物系统中翻译控制机制的比较分析.

主要成果:

病原体的识别会诱导植物螺旋酶,这些螺旋酶专门解开位于主要开放式读取框架 (mORF) 上游的RNA发针.
这种解活动使得核糖体能够有效地绕过上游的开放阅读框架 (uORF).
绕道机制促进了必要的下游防御蛋白的转化,增强了植物的免疫力.
在哺乳动物中,在转化控制中发现了涉及酶和uORFs的类似机制.

结论:

植物螺旋酶是对应病原体入侵的转化重编程的关键调节者.
螺旋酶对上游RNA发针的解对于生产防御蛋白质至关重要.
这种保存的机制突出了植物和动物基因调节的基本方面.
这些发现提供了对增强植物抗病能力的新策略的见解.

关键词:

头发头的头发是什么意思螺旋酸的使用方法病原体是一种病原体.核糖体的核糖体是指核糖体中的核糖体.开始 codon 开始 codon 翻译性重编程是一种翻译性重编程.

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