NZYTaq II DNA polymerase (MB354)

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Description: NZYTaq II DNA polymerase belongs to a new generation of Taq-derived DNA polymerases optimized for standard PCR applications. The enzyme was engineered to produce high DNA yields in shorter PCR running times (15-30 s/kb extension) under minimal optimization conditions. NZYTaq II DNA polymerase lacks 3´→5´ exonuclease activity and supports the robust and reliable amplification of a wide range of DNA templates up to 6 kb. The enzyme was optimized to provide higher sensitivity, allowing amplification of different DNA fragments from as little as 5 pg of human genomic DNA. Resulting PCR products have an A-overhang and are suitable for cloning with NZYTech´s NZY-A PCR cloning kit (MB053) or NZY-A Speedy PCR cloning kit (MB137).

– High yields with minimal optimization
– Robust amplification using a wide range of DNA templates
– Leaves an A-overhang

– Powerful PCR
– Generation of products for TA cloning


Product length: 0-6 kb
Hot-start-like capacity: no
Extension time: 15-30 sec/kb at 72 ºC
3´→5´ activity: no
Product overhang: 3’-A
Available as Mixes: NZYTaq II 2x Green Master Mix (MB358); NZYTaq II 2x Colourless Master Mix (MB357)
Storage conditions: Store at -20 ºC
Shipping conditions: Shipped at 4 ºC to dry ice

– NZYTaq II DNA polymerase (5 U/μL)
– Reaction buffer (10x)
– MgCl2 Solution (50 mM)


NZYTech also provides a hot-start-like version of NZYTaq II DNA polymerase (Supreme NZYTaq II DNA polymerase), for powerful amplification of low-copy templates.

Product Brochure EN

1. What to do when there is no product amplification or low yield?
This can be due to the following situations:
a) Inadequate annealing temperature. The reaction mix composition may affect the melting properties of primers and DNA. Adjust the annealing temperature to accommodate the primer with the lowest melting temperature (5 °C to 10 °C lower than Tm).
b) Presence of PCR inhibitors. Some DNA isolation procedures, particularly genomic DNA isolation, can result in the co-purification of PCR inhibitors. Reduce the volume of template DNA in reaction or dilute template DNA prior to adding to the reaction. Diluting samples even 1:10,000 has been shown to be effective in improving results, depending on initial DNA concentration.
c) Additives required. Adding PCR-enhancing agents, like NZYTaq 5x Optimizer Solution (MB060) or NZYTaq 2x GC-Enhancer solution (MB143) may improve yield while amplifying difficult templates.

2. How can I reduce the number of non-specific bands?
Adjust annealing conditions and/or design another set of primers, by increasing the length and avoiding complementary sequences. Adjust concentration of magnesium. Generally, 2-3 mM MgCl2, typically 2.5 mM final concentration, works well for the majority of PCR reactions. Optimal concentration depends on target template, buffer and dNTPs. Optimise magnesium concentration by supplementing MgCl2 in 0.5 increments up to 4 mM.

3. How should I store my NZYTaq II DNA polymerase?
The product should be stored at -20 ºC, in a constant temperature freezer.


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