G-quadruplex folding uncouples cis-activation from collateral trans-cleavage by Cas12a
The CRISPR/Cas12a system is widely used in nucleic-acid diagnostics because Cas12a couples guide-directed recognition of a cis-target with indiscriminate collateral trans-cleavage of ssDNA. Controlling these activities through DNA structure can tune diagnostic signals. G-quadruplexes (G4s) are strong structural regulat...