microRNAs slow translating ribosomes to prevent protein misfolding
microRNAs slow translating ribosomes to prevent protein misfolding
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microRNA 减缓核糖体翻译以防止蛋白质错误折叠
DOI:
10.1101/2020.12.08.417139
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Yamamoto Tadashi
中科院分区:
文献类型:
--
作者:
Sako Hiroaki;Akimoto Takayuki;Suzuki Katsuhiko;Ushida Takashi;Yamamoto Tadashi
An evolutionarily conserved mechanism, use of non-optimal codons, slows ribosomes during translation to allow proper folding of nascent polypeptides. However, until now, it was unknown whether any eukaryote-specific mechanisms exist for this purpose. Here, we propose that miRNAs slow translating ribosomes to prevent protein misfolding, with little negative effect on protein abundance. To prove this, we bioinformatically analyze ribosome profiling and miRNA binding sites and biochemically confirm that miRNA deficiency causes severe misfolding, which is rescued by slowing translating ribosomes. We demonstrate that non-cleaving shRNAs, targeting regions where elongation rates become faster in miRNA-deficient cells, improve protein folding with minimal effects on protein abundance. These results reveal broader functionality of miRNAs and a previously unknown mechanism to prevent protein misfolding.One Sentence SummaryEukaryote use of miRNAs prevents protein misfolding in a target-specific manner.
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影响因子:
2.7
作者:
Martin,KA;MillerJr,OL
通讯作者:
MillerJr,OL
影响因子:
16
作者:
Simms CL;Yan LL;Zaher HS
通讯作者:
Zaher HS
影响因子:
16
作者:
K. Stein;Allison Kriel;J. Frydman
通讯作者:
K. Stein;Allison Kriel;J. Frydman
影响因子:
64.8
作者:
通讯作者:
--
DOI:
--
发表时间:
1991
期刊:
影响因子:
--
作者:
Minoru Haginoya;S. Matsumoto
通讯作者:
S. Matsumoto