Lexogen Online FAQs

What are the properties of the SIRV transcripts’ terminal sequences?

The SIRVs as well as the ERCCs are in vitro transcription products, and therefore all RNAs start with a 5' ppp-G. Hence, cap-specific cDNA preparation methods are not feasible. The 3' end of each SIRV RNA is polyadenylated (SIRV isoforms and long SIRVs with 30 adenosines, ERCCs with 24 ± 1.05 nt adenosines), enabling oligo(dT) based selection and priming. The SIRVs User Guide contains a graphic representation of the SIRV design.
You can download the SIRV sequences and reference annotation files from the Lexogen web site at the following location: https://www.lexogen.com/sirvs/download/.


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