Concentration: 5U/µl Taq DNA Polymerase is a recombinant DNA Polymerase enzyme derived from Thermus aquaticus bacteria, a thermophilic bacteria. Its molecular weight is 94 kDa and Taq DNA Polymerase is suitable for amplification of target DNA up to 5 kb. The elongation rate is ~ 0.9 – 1.2 kb /minute (70-75°C). It has 5‘ – 3’ polymerase activity, 5‘ – 3’ exonuclease activity. However, there is no 3‘ – 5’ exonuclease activity.