Adaptation of codon usage to tRNA I34 modification controls translation kinetics and proteome landscape
Adaptation of codon usage to tRNA I34 modification controls translation kinetics and proteome landscape
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密码子使用对 tRNA I34 修饰的适应控制着翻译动力学和蛋白质组景观
DOI:
10.1371/journal.pgen.1008836
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发表时间:
2020-06
期刊:
影响因子:
4.5
通讯作者:
Yi Liu
中科院分区:
文献类型:
--
作者:
Xueliang Lyu;Qian Yang;Lin Li;Yunkun Dang;Zhipeng Zhou;She Chen;Yi Liu
Codon usage bias is a universal feature of all genomes and plays an important role in regulating protein expression levels. Modification of adenosine to inosine at the tRNA anticodon wobble position (I34) by adenosine deaminases (ADATs) is observed in all eukaryotes and has been proposed to explain the correlation between codon usage and tRNA pool. However, how the tRNA pool is affected by I34 modification to influence codon usage-dependent gene expression is unclear. Using Neurospora crassa as a model system, by combining molecular, biochemical and bioinformatics analyses, we show that silencing of adat2 expression severely impaired the I34 modification levels for the ADAT-related tRNAs, resulting in major ADAT-related tRNA profile changes and reprogramming of translation elongation kinetics on ADAT-related codons. adat2 silencing also caused genome-wide codon usage-biased ribosome pausing on mRNAs and proteome landscape changes, leading to selective translational repression or induction of different mRNAs. The induced expression of CPC-1, the Neurospora ortholog of yeast GCN4p, mediates the transcriptional response after adat2 silencing and amino acid starvation. Together, our results demonstrate that the tRNA I34 modification by ADAT plays a major role in driving codon usage-biased translation to shape proteome landscape.
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影响因子:
16
作者:
Quax TE;Claassens NJ;Söll D;van der Oost J
通讯作者:
van der Oost J
影响因子:
64.5
作者:
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通讯作者:
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影响因子:
5.3
作者:
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影响因子:
56.9
作者:
Gerber, AP;Keller, W
通讯作者:
Keller, W
DOI:
10.1074/jbc.272.1.255
发表时间:
1997-01
期刊:
The Journal of Biological Chemistry
影响因子:
--
作者:
Zhong Wang;M. Sachs
通讯作者:
Zhong Wang;M. Sachs