RNA editing changes more than 400 cytidines to uridines in the mRNAs of mitochondria in flowering plants. In other plants such as ferns and mosses, RNA editing reactions changing C to U and U to C are observed at almost equal frequencies. Development of transfection systems with isolated mitochondria and of in vitro systems with extracts from mitochondria has considerably improved our understanding of the recognition of specific editing sites in the last few years. These assays have also yielded information about the biochemical parameters, but the enzymes involved have not yet been identified. Here we summarize our present understanding of the process of RNA editing in flowering plant mitochondria.

中文翻译：

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植物线粒体中RNA编辑的过程


RNA 编辑将开花植物线粒体 mRNA 中的 400 多个胞苷改变为尿苷。在蕨类植物和苔藓等其他植物中，观察到将 C 变为 U 和将 U 变为 C 的 RNA 编辑反应的频率几乎相同。在过去几年中，使用分离的线粒体的转染系统和使用线粒体提取物的体外系统的开发大大提高了我们对特定编辑位点识别的理解。这些测定还产生了有关生化参数的信息，但所涉及的酶尚未被鉴定。在这里，我们总结了目前对开花植物线粒体 RNA 编辑过程的理解。