Functional specialization of ribosomes?
Functional specialization of ribosomes?
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DOI:
10.1016/j.tibs.2010.12.002
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发表时间:
2011-03
影响因子:
13.8
通讯作者:
Gilbert, Wendy V.
中科院分区:
文献类型:
--
作者:
Gilbert, Wendy V.
Ribosomes are highly conserved macromolecular machines responsible for protein synthesis in all living organisms. Work published in the past year shows that changes to the ribosome core can affect the mechanism of translation initiation that is favored in the cell, potentially leading to specific changes in the relative efficiencies with which different proteins are made. Here I examine recent data from expression and proteomic studies suggesting that cells make slightly different ribosomes under different growth conditions and discuss genetic evidence that such differences are functional. In particular, I will argue that eukaryotic cells likely produce ribosomes that lack one or more ‘core’ ribosomal proteins (RPs) under some conditions, and that ‘core’ RPs contribute differentially to translation of distinct subpopulations of mRNAs.
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