pCS2+ contains a strong enhancer/promoter (simian CMV IE94) followed by a polylinker and the SV40 late polyadenlyation site. An SP6 promoter is present in the 5' untranslated region of the mRNA from the sCMV promoter, allowing in vitro RNA synthesis of sequences cloned into the polylinker. A T7 promoter in reverse orientation between the polylinker and the SV40 polyA site for probe synthesis, as well as a second polylinker after the SV40 polyA site to provide several possible sites to linearize the vector for SP6 RNA transcription. The vector backbone is from pBluescript II KS+ and includes the amp resistance gene and an f1 origin for producing single stranded DNA.
