dCas9*_PhlF
Multi-Component SwitchdCas9*_PhlF is a bacterial CRISPR-based transcriptional switch comprising a non-toxic dCas9* variant with the R1335K PAM-binding mutation fused to the PhlF repressor. The fusion recovered DNA-binding-dependent repression and enabled sgRNA-programmed NOT gate behavior that depends on both an sgRNA target site and a PhlF operator.