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Can Protein Expression Be Regulated by Modulation of tRNA Modification Profiles?

机译:可以通过调节TRNA改性型材来调节蛋白质表达吗?

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摘要

tRNAs are the central adaptor molecules in translation. Their decoding properties are influenced by post-transcriptional modifications, particularly in the critical anticodon-stem-loop (ASL) region. Synonymous codon choice, also called codon usage bias, affects both translation efficiency and accuracy, and ASL modifications play key roles in both of these processes. In combination with a handful of historical examples, recent studies integrating ribosome profiling, proteomics, codon-usage analyses, and modification quantifications show that levels of tRNA modifications can change under stress, during development, or under specific metabolic conditions and can modulate the expression of specific genes. Deconvoluting the different responses (global or specific) to tRNA modification deficiencies can be difficult because of pleiotropic effects, but, as more cases emerge, it does seem that tRNA modification changes could add another layer of regulation in the transfer of information from DNA to protein.
机译:TRNA是翻译中的中央适配器分子。它们的解码特性受转录后修改的影响,特别是在关键的抗助旋茎 - 环(ASL)区域中。同义密码子选择,也称为密码子使用偏差,影响翻译效率和准确性,ASL修改在这些过程中的两个过程中扮演密钥角色。结合少数历史例子,最近的研究整合核糖体分析,蛋白质组学,密码子使用分析和修饰量化表明,TRNA修饰的水平可以在应力,在发育过程中或在特定的代谢条件下改变,并且可以调节表达特定基因。根据磷酸效应,难以造成不同的反应(全局或特异性或特异性或特定的)至TRNA改性缺陷,但随着较多的案例出现,它似乎确实可以在从DNA到蛋白质的信息转移中添加另一层调节层。

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