Transomic’s shERWOOD-UltramiR™ shRNA libraries are next-generation, vector-based RNAi triggers designed using the proprietary shERWOOD algorithm that was developed and validated in Dr. Gregory Hannon’s laboratory at Cold Spring Harbor Laboratory
(Knott et al 2014). The library uses an alternate microRNA scaffold called "UltramiR“. The UltramiR scaffold has been optimized for increased shRNA processing and potency based on the key determinants for primary microRNA processing (Auyeung et al 2013).
The shERWOOD algorithm is based on the functional testing of over 250,000 shRNA sequences using a high-throughput sensor assay and uses key sequence characteristics for predicting shRNA potency to select the rare shRNA designs that are potent at single copy representation in the genome.