Merck, 4738292001, FastStart™ High Fidelity PCR System, dNTPack

The enzyme dNTPack comprises the FastStart High Fidelity PCR System and a ready-to-use solution of PCR grade nucleotides. The FastStart High Fidelity PCR System is a blend of FastStart Taq DNA Polymerase and a thermostable proofreading protein, which is also chemically modified. This protein mediates proofreading activity, but carries no polymerase activity. Both proteins are inactive below +75°C and are activated by heating to +95°C for two minutes. The FastStart® High Fidelity PCR System is the ideal tool for all amplification experiments where a combination of high specificity, sensitivity, accuracy, and yield is needed. Hot start protocols have improved specificity, sensitivity, and PCR yield. Heat-labile blocking groups on amino acid residues of FastStart Taq DNA Polymerase make the enzyme inactive at room temperature. There is no elongation at low temperatures when primers bind nonspecifically.