Rebirth of the translational machinery: The importance of recycling ribosomes.
Rebirth of the translational machinery: The importance of recycling ribosomes.
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DOI：
10.1002/bies.202100269
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发表时间：
2022-04
期刊：
影响因子：
4
通讯作者：
Guydosh, Nicholas R.
中科院分区：
文献类型：
--
作者：
Young, David J.;Guydosh, Nicholas R.
Translation of the genetic code occurs in a cycle where ribosomes engage mRNAs, synthesize protein, and then disengage in order to repeat the process again. The final part of this process – ribosome recycling, where ribosomes dissociate from mRNAs – involves a complex molecular choreography of specific protein factors to remove the large and small subunits of the ribosome in a coordinated fashion. Errors in this process can lead to the accumulation of ribosomes at stop codons or translation of downstream open reading frames (ORFs). Ribosome recycling is also critical when a ribosome stalls during the elongation phase of translation and must be rescued to allow continued translation of the mRNA. Here we discuss the molecular interactions that drive ribosome recycling, and their regulation in the cell. We also examine the consequences of inefficient recycling with regards to disease, and its functional roles in synthesis of novel peptides, regulation of gene expression, and control of mRNA-associated proteins. Alterations in ribosome recycling efficiency have the potential to impact many cellular functions but additional work is needed to understand how this regulatory power is utilized.
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