Thermostable DNA polymerase
Thermus aquaticus, recombinant, E. coli
For in vitro use only!
Unit Definition: One unit is defined as the amount of the enzyme required to catalyze the incorporation of 10 nmoles of dNTP's into an acid-insoluble form in 30 minutes at 70 °C using hering sperm DNA as substrate.
Shipping: shipped on blue ice
Storage Conditions: store at -20 °C
avoid freeze/thaw cycles
Shelf Life: 12 months
Concentration: 5 units/μl
Availability Restriction: Exclusively distributed in Japan by Greiner BioOne
Taq Pol / high yield buffer is recommended for use in routine PCR reactions. The buffer system is optimized for high efficiency and gives superior amplification results in a broad range of reaction conditions with most primer-template pairs. The buffer system facilitates the incorporation of labeled or modified nucleotides into DNA. Note that the ammonium based buffer contains detergents and may interfere with automated pipetting systems.
The enzyme replicates DNA at 72 °C. It catalyzes the polymerization of nucleotides into duplex DNA in 5'→3' direction in the presence of magnesium. It also possesses a 5'→3' polymerization-dependent exo-nuclease replacement activity but lacks a 3'→5' exonuclease activity.
Taq Pol (red cap)
5 units/μl Taq DNA Polymerase in 20 mM Tris-HCl, 100 mM KCl,
0.1 mM EDTA, 1 mM DTT, 0.5 % Tween-20, 0.5 % Nonidet P-40,
50 % (v/v) Glycerol, pH 8.0 (25°C)
High Yield Buffer complete (green cap)
600 mM Tris-HCl, 150 mM (NH4)2SO4, 20 mM MgCl2,
0.05 % Tween-20, 0.05 % Nonidet P-40, pH 8.8 (25°C)
MgCl2 Stock Solution (yellow cap)
25 mM MgCl2
Recommended 50 μl PCR assay:
|5 μl||10x High Yield Buffer complete||green cap|
|200 μM||each dNTP||-|
|0.2 - 1 μM||each Primer||-|
|2 - 50 ng||template DNA||-|
|0.2 - 0.5 μl|
(1 - 2.5 units)
|Taq Pol||red cap|
|Fill up to 50 μl||PCR-grade water||-|
Optimization of MgCl2 concentration:
A concentration of 2.0 mM Mg2+ is recommended for most applications in combination with High Yield Buffer. For an individual optimization add MgCl2 stock solution as shown in the table below.
50 μl PCR assay
|MgCl2 Stock Solution||2 μl||4 μl||6 μl||8 μl|
|final MgCl2 conc.||3 mM||4 mM||5 mM||6 mM|
|94 °C||2 min||1x|
|denaturation||94 °C||30 sec||30x|
|annealing1)||45 - 68 °C||30 sec||30x|
|elongation2)||72 °C||30 sec - 4 min||30x|
|72 °C||2 min||1x|
For optimal specificity and amplification an individual optimization of the recommended parameters may be necessary for each new template DNA and/or primer pair.