We devised a novel cDNA synthesis reaction using RT and other two enzymes.
One is a Thermotoga petrophila family A DNA polymerase variant, K4polub>L329Aub>.
The other is a Thermococcus kodakarensis helicase, Tk-EshA.
The reaction condition was optimized using Taguchi’s statistical method.
As a result, 100 to 1000-fold higher sensitivity was achieved than current method.