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http://dx.doi.org/10.5483/BMBRep.2010.43.7.474

Quantification of the galactose-operon mRNAs 5 bases different in their 5'-ends  

Ji, Sang-Chun (Department of Biological Science, College of Biological Sciences and Biotechnology, Chungnam National University)
Wang, Xun (Department of Biological Science, College of Biological Sciences and Biotechnology, Chungnam National University)
Jeon, Heung-Jin (Department of Biological Science, College of Biological Sciences and Biotechnology, Chungnam National University)
Yun, Sang-Hoon (Department of Biological Science, College of Biological Sciences and Biotechnology, Chungnam National University)
Lee, Hee-Jung (Department of Biological Science, College of Biological Sciences and Biotechnology, Chungnam National University)
Lim, Heon-M. (Department of Biological Science, College of Biological Sciences and Biotechnology, Chungnam National University)
Publication Information
BMB Reports / v.43, no.7, 2010 , pp. 474-479 More about this Journal
Abstract
Three assay methods for quantification of the two galactose-operon mRNAs that only differ by 5 bases in their 5'-end are presented. The 5' ends of each mRNA were extended by ligating the 3'-end of the abundant 5S rRNA. This ligation extends the 5' ends of the two gal mRNAs long enough to be distinguished by the specific PCR primers in the following quantification reactions. Quantification of the corresponding cDNAs was performed either by primer extension assay or real-time qPCR. To circumvent the problem of the RNA ligation reaction (i.e. very low ligation efficiency), we devised a new method that employs real-time qPCR directly for the quantification of the gal transcripts which differ by 5 bases in their 5'-ends.
Keywords
Galactose operon; Real-time qPCR; Transcription; 5' RACE;
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