Directed evolution of an orthogonal transcription engine for programmable gene expression in eukaryotes
Shaunak Kar,
Elizabeth C. Gardner,
Kamyab Javanmardi
et al.
Abstract:T7 RNA polymerase has enabled orthogonal control of gene expression and recombinant protein production across diverse prokaryotic host chassis organisms for decades. However, the absence of 5' methyl guanosine caps on T7 RNAP derived transcripts has severely limited its utility and widespread adoption in eukaryotic systems. To address this shortcoming, we evolved a fusion enzyme combining T7 RNAP with the single subunit capping enzyme from African swine fever virus using Saccharomyces cerevisiae. We isolated h… Show more
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