中国科学院核酸生物学重点实验室,中国科学院核酸生物学重点实验室,中国科学院核酸生物学重点实验室,中国科学院核酸生物学重点实验室
国家自然科学基金(31520103905, 91440116)资助
Key Laboratory of RNA Biology,Institute of Biophysics,Chinese Academy of Sciences,Beijing,100101,Key Laboratory of RNA Biology,Institute of Biophysics,Chinese Academy of Sciences,Beijing,100101,Key Laboratory of RNA Biology,Institute of Biophysics,Chinese Academy of Sciences,Beijing,100101,Key Laboratory of RNA Biology,Institute of Biophysics,Chinese Academy of Sciences,Beijing,100101
This work was supported by a grant from The National Natural Science Foundation of China (31520103905, 91440116)
经典分子生物学的中心法则描述了遗传信息的传递方向.中心法则认为RNA只有通过翻译产生蛋白质才在生命活动中发挥功能.但是随着分子生物学的发展,很多RNA其本身就可以承担生命学功能.而且RNA的形式也不仅仅只有线性这一种.本文总结了RNA转录后命运的4种形式:不翻译、部分翻译、从头翻译和过度翻译.RNA命运的多样性使得对于翻译的理解比经典的中心法则规定的内容将更加丰富、复杂.充分了解RNA转录后的命运,对以后研究RNA的功能提出了更高的要求,也为我们真正而全面地了解RNA的功能提供了可能.
The central dogma of molecular biology describes the flow of genetic information within the biological system. According to the classical central dogma, RNA can only play its role in life through translation. With the development of molecular biology, rapidly growing evidence shows that RNAs perform a vast array of functions within organisms even without translation. Moreover, RNA can fold into different types aside from linear RNA. Here, we summarized the four forms of RNA for their post transcriptional fate: non-translation, part-translation, de novo-translation and over-translation. Non-translation means the RNAs can’t be translated to proteins as many non-coding RNAs do. Part-translation describes a phenomenon that the RNA can’t translate into a peptide chain using all the information as a template, but only a part of it. Whereas the de novo-translation refers to the classical translation process. Over-translation means the RNA can encode a protein using more than their own genetic information, which only occurs in circular RNAs. The diversity of RNA’s fate extends largely our understanding of translation above the classical central dogma. Further understanding of the fate of RNA post transcription will put forward more challenging demand on the research for the functions of RNA, and meanwhile, will also present the potential solutions for comprehensive understanding of the functions of RNA.
郝亚静,骆健俊,张宝,陈润生. RNA翻译的复杂性:不翻译、部分翻译、从头翻译及过度翻译[J].生物化学与生物物理进展,2017,44(7):547-556
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