• Name
  • Description
  • Cat#
  • Pricings
  • Quantity
  • TaqDNA

  • Taq DNA Polymerase Recombinant
  • ENZ-308
  • Shipped with Ice Packs

Catalogue number



DNA polymerase I thermostable, EC, Taq polymerase 1.


Taq DNA Polymerase(a) is a thermostable enzyme of approximately 95 kDa isolated from Thermus aquaticus. This unmodified enzyme replicates DNA at 74°C and exhibits a half-life of 40 minutes at 95°C. The enzyme catalyzes the polymerization of nucleotides into duplex DNA in the 5´~3´ direction in the presence of magnesium and also possesses a 5´~3´ exonuclease activity. Taq DNA Polymerase is recommended for use in PCR but is not recommended for use in DNA sequencing reactions.


Recombinant e.coli contains Thermus aquaticus polymerase gene.


Taq DNA Polymerase solution in 20mM Tris-HCl, pH 8.0, 100mM KCl, 0.1mM EDTA, 1mM DTT, 50% Glycerol, 0.5% NP40, 0.5% Tween 20.

Unit Definition

One unit is defined as the amount of enzyme required to catalyze the incorporation of 10nmol of dNTP into acid-insoluble material in 30 minutes at 74°C. The reaction conditions are: 50mM Tris-HCl (pH 9.0 at 25°C), 50mM NaCl, 5mM MgCl2, 200µm each of dATP, dCTP, dGTP, dTTP (a mix of unlabeled and [3H]dTTP), 10µg activated calf thymus DNA and 0.1mg/ml BSA in a final volume of 50ul.

10X Reaction Buffer with MgCl2

500mM KCl, 100mM Tris-HCl (pH 9.0 at 25C), 1% Triton X-100 and 15mM MgCl2. Buffer is optimized for use with 0.2mM of each dNTP.

10X Reaction Buffer without MgCl2

500mM KCl, 100mM Tris-HCl (pH 9.0 at 25C) and 1% Triton X-100. Include: 10X Reaction Buffer without MgCl2 and separate 25mM MgCl2 Solution.

Specify Your Own Reaction Conditions

Choose either Taq with Mg-free 10X Reaction Buffer and separate 25mM MgCl2 or Taq with 10X Reaction Buffer containing 15mM MgCl2.


Stable for 5 days at 10°C, for longer period of time store at -20°C.

Storage Buffer

Compatibility with Reaction Buffers: Taq DNA Polymerase in Storage Buffer. Use of other reaction buffers that do not contain Triton X-100 (final concentration of 0.1%) will result in inactivation of the enzyme.
50mM Tris-HCl (pH 8.0), 100mM NaCl, 0.1mM EDTA, 1mM DTT, 50% glycerol and 1% Triton X-100.


Greater than 95.0% as determined by SDS-PAGE.

Safety Data Sheet


Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
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