H1/TO promoter
Multi-Component SwitchThe H1/TO promoter is a tetracycline-operator-modified H1 RNA polymerase III promoter used in a multi-component CRISPR/Cas9 switch to drive doxycycline-dependent guide RNA expression. In the reported system, it functioned with TetR-mediated regulation and supported in vitro DNA editing with efficiency similar to a U6/TO promoter.