I have now tried the KAPA HiFi HotStart enzyme and sequenced cloned PCR fragment to see how many introduced PCR mutation this enzyme gives.
Template: cDNA from the C2C12 cell line
Expected product size: 2.3 kb
Reaction setup: As described in the manufacturers manual
Cycles:
95° 3'
98° 20" 60° 15" 72° 90" 40x
72° 3'
Cloned and sequenced three individual clones.
Mutation: 0 (zeeeeero)
I have also used this enzyme for low complexity amplifications (plasmid as template and 16 cycles) and have not seen a single introduced mutation.
KAPA HiFi HotStart is absolutely the best enzyme I have ever used when high fidelity is desired and is my future choice for all my PCR applications, instead of the many other enzymes I have used and tried over nearly two decades in science.
KAPA HiFi HotStart has also, in my hands, proven to be very robust; it has worked every time even with known difficult template and primer pairs.
Göran Hjälm, Assc. Professor
Uppsala University
Sweden