We read your paper from last year titled “Rapid, Low-Cost Detection of Zika Virus Using
Programmable Biomolecular Components” and we wanted to know, what led you to
use β-galactosidase as a colored readout?
Dr. Pardee: At that time, we hadn’t considered using C2C2 (Cas13a). So, one of the reasons was
because of the enzyme activity. Single molecule of reporter could serve amplification, rather than
just fluorescence. The other (reason) was just for practical use. No need (to use) UV lights,
electronics, camera, and could be done in a simple piece of paper. Tried 10 different enzyme
options with other based reporters.
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