GSM2069214: Sma Total -TEX; Serratia marcescens; RNA-Seq
RNA extracted by hot phenol method and treated with DNase cDNA libraries for the Illumina sequencing platform were constructed by vertis Biotechnology AG, Germany, as described previously (Berezikov et al.,2006), without the RNA size-fractionation step prior to cDNA synthesis. Briefly, RNA samples were polyA-tailed using polyA polymerase. Then, the 5'-PPP termini were converted to 5'-P using tobacco acid pyrophosphatase (TAP) to allow for the ligation of the 5’ end RNA adapter. First-strand cDNA was synthesized by an oligo(dT)-adapter primer and the M-MLV reverse transcriptase. In a PCR-based amplification step using a high fidelity DNA polymerase the cDNA concentration was increased to 20-30 ng/µl. A library-specific barcode for multiplex sequencing was part of a 3'-sequencing adapter.