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翻译后文本:uORFs 和起始密码子选择严格性的翻译调控。

Translational regulation by uORFs and start codon selection stringency.

机构信息

Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, USA

出版信息

Genes Dev. 2023 Jun 1;37(11-12):474-489. doi: 10.1101/gad.350752.123. Epub 2023 Jul 11.

DOI:10.1101/gad.350752.123
PMID:37433636
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10393191/
Abstract

In addition to the main, protein-coding, open reading frame (mORF), many eukaryotic mRNAs contain upstream ORFs (uORFs) initiated at AUG or near-cognate codons residing 5' of the mORF start site. Whereas translation of uORFs generally represses translation of the mORFs, a subset of uORFs serves as a nexus for regulating translation of the mORF. In this review, we summarize the mechanisms by which uORFs can repress or stimulate mRNA translation, highlight uORF-mediated translational repression involving ribosome queuing, and critically evaluate recently described alternatives to the delayed reinitiation model for uORF-mediated regulation of the / mRNAs.

摘要

除了主要的、蛋白质编码的开放阅读框 (mORF) 外,许多真核 mRNA 还包含起始于 AUG 或 mORF 起始位点 5' 处附近的同义密码子的上游开放阅读框 (uORF)。虽然 uORF 的翻译通常会抑制 mORF 的翻译,但一部分 uORF 作为调节 mORF 翻译的枢纽。在这篇综述中,我们总结了 uORF 抑制或刺激 mRNA 翻译的机制,重点介绍了涉及核糖体排队的 uORF 介导的翻译抑制,并批判性地评价了最近描述的替代延迟重新起始模型来解释 uORF 对 / mRNAs 的调节作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/98df/10393191/d464104ee919/474f06.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/98df/10393191/7f24871c7094/474f01.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/98df/10393191/f3d7557a2ab5/474f02.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/98df/10393191/c78f7dead449/474f03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/98df/10393191/04c38613c14e/474f04.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/98df/10393191/3754c7f0d125/474f05.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/98df/10393191/d464104ee919/474f06.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/98df/10393191/7f24871c7094/474f01.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/98df/10393191/f3d7557a2ab5/474f02.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/98df/10393191/c78f7dead449/474f03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/98df/10393191/04c38613c14e/474f04.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/98df/10393191/3754c7f0d125/474f05.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/98df/10393191/d464104ee919/474f06.jpg

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