Cappable-seq is a method for directly enriching the 5´ end of primary transcripts developed at NEB. This is achieved by capping the 5´ triphosphorylated end of RNA with the Vaccinia Capping System (NEB #M2080) and 3´-Desthiobiotin-GTP (NEB #N0761). The primary transcripts are enriched by binding to Hydrophilic Streptavidin Magnetic Beads (NEB #S1421), followed by washing and eluting with biotin.The method enables determination of transcription start sites at single base resolution (1).



  1. Ettwiller, L. et al. (2016). BMC Genomics. 17, 199.

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