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多聚(G)盒:参与翻译的哺乳动物 18S rRNA 的一个功能元件。

Poly(G) box: a functional element of mammalian 18S rRNA involved in translation.

机构信息

School of Life Sciences and Biopharmaceuticals, Guangdong Pharmaceutical University, Guangzhou, China.

School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, China.

出版信息

RNA Biol. 2024 Jan;21(1):8-18. doi: 10.1080/15476286.2024.2399310. Epub 2024 Sep 5.

DOI:10.1080/15476286.2024.2399310
PMID:39233564
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11382726/
Abstract

In eukaryotes, the ribosomal small subunit (40S) is composed of 18S rRNA and 33 ribosomal proteins. 18S rRNA has a special secondary structure and is an indispensable part of the translation process. Herein, a special sequence located in mammalian 18S rRNA named Poly(G)box, which is composed of seven guanines, was found. Poly(G) can form a special and stable secondary structure by binding to the translation elongation factor subunit eEF1D and the ribosomal protein RPL32. Poly(G)box was transfected into cells, and the translation efficiency of cells was inhibited. We believe that Poly(G)box is an important translation-related functional element located on mammalian 18S rRNA, meanwhile the Poly(G) located on mRNA 5' and 3' box does not affect mRNA translation.

摘要

在真核生物中,核糖体小亚基(40S)由 18S rRNA 和 33 种核糖体蛋白组成。18S rRNA 具有特殊的二级结构,是翻译过程中不可或缺的一部分。在此,发现了一个位于哺乳动物 18S rRNA 中的特殊序列,称为 Poly(G)box,它由七个鸟嘌呤组成。Poly(G)可以通过与翻译延伸因子亚基 eEF1D 和核糖体蛋白 RPL32 结合形成特殊而稳定的二级结构。将 Poly(G)box 转染到细胞中,会抑制细胞的翻译效率。我们认为 Poly(G)box 是位于哺乳动物 18S rRNA 上的一个重要的翻译相关功能元件,而位于 mRNA 5' 和 3' 框上的 Poly(G)并不影响 mRNA 的翻译。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eeb/11382726/23ec42c3eb20/KRNB_A_2399310_F0005_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eeb/11382726/6b501cd28f90/KRNB_A_2399310_F0001_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eeb/11382726/b0ec93a91d8d/KRNB_A_2399310_F0002_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eeb/11382726/db56cfd6a821/KRNB_A_2399310_F0003_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eeb/11382726/76b6e841142b/KRNB_A_2399310_F0004_B.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eeb/11382726/23ec42c3eb20/KRNB_A_2399310_F0005_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eeb/11382726/6b501cd28f90/KRNB_A_2399310_F0001_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eeb/11382726/b0ec93a91d8d/KRNB_A_2399310_F0002_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eeb/11382726/db56cfd6a821/KRNB_A_2399310_F0003_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eeb/11382726/76b6e841142b/KRNB_A_2399310_F0004_B.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eeb/11382726/23ec42c3eb20/KRNB_A_2399310_F0005_OC.jpg

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本文引用的文献

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