Bifunctional transfer-messenger RNA.
Bifunctional transfer-messenger RNA.
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DOI:
10.1016/j.biochi.2011.05.029
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发表时间:
2011-11
期刊:
影响因子:
3.9
通讯作者:
Ramadoss, Nitya S.
中科院分区:
文献类型:
--
作者:
Keiler, Kenneth C.;Ramadoss, Nitya S.
Transfer-messenger RNA (tmRNA) is a bifunctional RNA that has properties of a tRNA and an mRNA. tmRNA uses these two functions to release ribosomes stalled during translation and target the nascent polypeptides for degradation. This concerted reaction, known as trans-translation, contributes to translational quality control and regulation of gene expression in bacteria. tmRNA is conserved throughout bacteria, and is one of the most abundant RNAs in the cell, suggesting that trans-translation is of fundamental importance for bacterial fitness. Mutants lacking tmRNA activity typically have severe phenotypes, including defects in viability, virulence, and responses to environmental stresses.
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