Loughran Gary, Howard Michael T, Firth Andrew E, Atkins John F
School of Biochemistry and Cell Biology, University College Cork, Cork T12 YT57, Ireland.
Department of Human Genetics, University of Utah, Salt Lake City, Utah 84112, USA.
RNA. 2017 Aug;23(8):1285-1289. doi: 10.1261/rna.061051.117. Epub 2017 Apr 25.
Positioning test sequences between fused reporters permits monitoring of both translation levels and framing, before and after the test sequence. Many studies, including those on recoding such as productive ribosomal frameshifting and stop codon readthrough, use distinguishable luciferases or fluorescent proteins as reporters. Occasional distortions, due to test sequence product interference with the individual reporter activities or stabilities, are here shown to be avoidable by the introduction of tandem StopGo sequences (2A) flanking the test sequence. Using this new vector system (pSGDluc), we provide evidence for the use of a 3' stem-loop stimulator for readthrough, but failed to detect the reported readthrough.
将测试序列置于融合报告基因之间,可以监测测试序列前后的翻译水平和读框。许多研究,包括那些关于重新编码的研究,如生产性核糖体移码和终止密码子通读,都使用可区分的荧光素酶或荧光蛋白作为报告基因。由于测试序列产物干扰单个报告基因的活性或稳定性而导致的偶尔失真,在这里表明通过在测试序列两侧引入串联的StopGo序列(2A)是可以避免的。使用这种新的载体系统(pSGDluc),我们提供了使用3'茎环刺激物进行通读的证据,但未能检测到报道的通读情况。