Stimulation of ribosomal frameshifting by antisense LNA

Chien Hung Yu, Mathieu H.M. Noteborn, René C.L. Olsthoorn

研究成果: Article同行評審

25 引文 斯高帕斯(Scopus)

摘要

Programmed ribosomal frameshifting is a translational recoding mechanism commonly used by RNA viruses to express two or more proteins from a single mRNA at a fixed ratio. An essential element in this process is the presence of an RNA secondary structure, such as a pseudoknot or a hairpin, located downstream of the slippery sequence. Here, we have tested the efficiency of RNA oligonucleotides annealing downstream of the slippery sequence to induce frameshifting in vitro. Maximal frameshifting was observed with oligonucleotides of 12-18nt. Antisense oligonucleotides bearing locked nucleid acid (LNA) modifications also proved to be efficient frameshift-stimulators in contrast to DNA oligonucleotides. The number, sequence and location of LNA bases in an otherwise DNA oligonucleotide have to be carefully manipulated to obtain optimal levels of frameshifting. Our data favor a model in which RNA stability at the entrance of the ribosomal tunnel is the major determinant of stimulating slippage rather than a specific three-dimensional structure of the stimulating RNA element.

原文English
頁(從 - 到)8277-8283
頁數7
期刊Nucleic acids research
38
發行號22
DOIs
出版狀態Published - 2010 12月

All Science Journal Classification (ASJC) codes

  • 遺傳學

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