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首页> 外文期刊>Trends in Plant Science >Pentatricopeptide repeat proteins: a socket set for organelle gene expression
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Pentatricopeptide repeat proteins: a socket set for organelle gene expression

机译:五肽重复蛋白:细胞器基因表达的套接字集

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摘要

Pentatricopeptide repeat (PPR) proteins are RNA-binding proteins that are particularly prevalent in terrestrial plants. Although the PPR protein family was only recognized eight years ago, it is already clear that these proteins have a range of essential functions in post-transcriptional processes (including RNA editing, RNA splicing, RNA cleavage and translation) within mitochondria and chloroplasts. Several PPR proteins have been shown to act as fertility restorer genes in commercially important cytoplasmic male sterility systems. Here, we discuss several recent papers that cover their evolutionary history and molecular mode of action. We use these new data to propose hypotheses for their physiological roles that could explain why PPR proteins are so numerous in terrestrial plants.
机译:五肽重复序列(PPR)蛋白是RNA结合蛋白,在陆生植物中特别普遍。尽管PPR蛋白质家族仅在八年前就被认可,但很显然,这些蛋白质在线粒体和叶绿体中的转录后过程(包括RNA编辑,RNA剪接,RNA裂解和翻译)中具有一系列基本功能。在商业上重要的细胞质雄性不育系统中,已显示出几种PPR蛋白可作为生育力恢复基因。在这里,我们讨论了几篇涵盖其进化历史和分子作用方式的最新论文。我们使用这些新数据提出其生理作用的假设,这些假设可以解释为什么PPR蛋白在陆生植物中如此众多。

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