S1 sensor sequencing (SI Fig 2g) in the condition 200 ng s70587 + 250 ng BFPmut-3UTR(t70587) + 50 ng ADAR1-p150
mRNA was extracted and reverse transcribed. The resulting cDNA was PCR-amplified using locus-specific primers for the sensor or trigger, gel purified, and shipped to Genewiz for Amplicon-EZ sequencing.