Titan HotTaq DNA polymerase

Titan HotTaq DNA Polymerase (Fig. 1) is a modified Titan Taq DNA Polymerase. At ambient temperatures it is inactive, having no polymerase activity. Titan HotTaq DNA Polymerase is activated by a 15 minute incubation at 95-97°C, preventing the extension of non-specifically annealed primers and primer-dimers formed at low temperatures during PCR setup. The enzyme has 5’ to 3’ polymerisation-dependent exonuclease replacement activity but lacks 3’ to 5’ exonuclease activity. The enzyme has “extendase activity” allowing TA cloning.

Quality control:
The enzyme is free of nicking and priming activities, exonucleases and unspecific endonucleases. SDS/PAGE – 95 kD band, >98% pure. Activity and stability tested via thermocycling. The error rate per nucleotide per cycle is ~2.5 x 10-5; the accuracy is ~ 4 x 104. Estimated half life at 95°C is 1.5 hours.

Storage & Dilution buffer:
50% glycerol (v/v), 20 mM Tris-HCl pH 8.7 at 25°C, 100 mM KCl, 0.1 mM EDTA and stabilizers.

Supplied with:
10x Reaction Buffer 1 (Mg2+, detergent free) Tris-HCl and (NH4)2SO4
10x Reaction Buffer 2 (Mg2+ free) Tris-HCl, (NH4)2SO4 and detergent
25 mM MgCl2
10x Enhancer – Additive that facilitates amplification of difficult templates (e.g. GC-rich DNA templates). This solution should be used at a defined working concentration (1x, 2x or 3x solution). Enhancer is NOT a reaction buffer and should be used ONLY IF non-specific amplifications occur.

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