( e amplicon generated by PfuTurbo DNA po...)pfuturbo DNA Polymerase:,,,A High-Performance, High-Fidelity Enzyme Ideal for PCR Cloning

e amplicon generated by PfuTurbo DNA polymerase was also purified using the StrataPrep PCR kit method prior to the ligation reaction. The CAM amplicons were ligated to the PCR-Script vector, and the products were transformed into Epicurian Coli XL1-Blue MRF Kan supercompetent cells according to instructions in the PCR-Script Amp SK(+) cloning kit manual. The transformation mixtures were plated on LB ampicillin (50 g/ml) plates containing 0.5mM IPTG and 40 g/ml X-gal. Following overnight incubation at 37C, recombinant (white) and nonrecombinant (blue) colonies were counted. White colonies containing the putative insert were replica plated onto LB plates containing chloramphenicol (35 g/ml) to determine the percentage of CAM-resistant positives.

Figure 1

The mean percentage of recombinant clones per plate (white colony number divided by blue colony number multiplied by 100) and the mean percentage of white colonies that were also CAM-resistant are presented in Figure 1: PfuTurbo DNA polymerase produced CAM amplicons cloned with high efficiency (85%). Amplicons generated from Taq DNA polymerase were also cloned with greater than 85% efficiency, if the amplicons were polished prior to ligation to the PCR Script vector. The cloning efficiency of Taq-generated product was less than 10% in these experiments if no polishing reaction was performed (data not shown).

Conclusions

PfuTurbo DNA polymerase is a high-performance, high-fidelity enzyme formulation ideal for generating blunt-end PCR amplicons that are easily cloned with high efficiency using the PCR-Script cloning kit. Amplicons generated with Taq DNA polymerase not only require polishing prior to ligation to the PCR Script vector but also possess six-fold greater errors. When com
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