rTaq DNA Polymerase

Product#: TAP-201
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rTaq DNA Polymerase

Cat. No. TAP-201
Storage -20C
Size 250ul


Taq DNA polymerase is the most widely used thermostable DNA polymerase derived from the thermophilic bacteria Thermus aquaticus (Taq) YT-1. The enzyme possesses a 5’→3’ polymerase activity and a double-strand specific 5’→ 3’ exonuclease activity.
  • Tolerates various kinds of PCR protocols.
  • Applicable for hot start technology by adding anti-Taq antibody (Code No. TCP-101).
  • PCR products can be cloned by using a TA cloning method.
  • Incorporates dUTP, dITP, and fluorescently-labeled nucleotides.
  • PCR
  • Primer extension

E. coli strain carrying the cloned Taq DNA polymerase gene from Thermus aquaticus (Taq) YT-1.

Unit definition

One unit is defined as the amount of enzyme that will incorporate 10 nmoles of dNTP into an acid insoluble material in 30 min at 75ºC.

Storage condition 

Store at -20ºC, 20 mM Tris-HCl (pH 8.0), 100 mM KCl, 0.1 mM EDTA, 0.5% Nonidet® P-40, 0.5% Tween® 20, 50% Glycerol.


This reagent includes the following components for 100-200 reactions;
  • rTaq DNA Polymerase (2.5U/µl)
  • 10×Buffer
  • 25 mM MgCl2
  • 2mM dNTPs
Typical PCR Reaction Setup

Normal PCR
Component Volume Final Concentration
10x Buffer 5 µl
2mM dNTPs 5 µl 0.2 mM each
25mM MgCl2 3 µl 1.5 mM
10pmol/ul Primer #1 1.0 µl 0.2 µM
10pmol/ul Primer #2 1.0 µl 0.2 µM
Template DNA X µl Genomic DNA 10~1000 ng/50 µl
Plasmid DNA 1~50 ng/50 µl
cDNA ~200 ng (RNA equiv.)/50 µl
PCR grade water Y µl  
Diluted rTth DNA polymerase (1.0U/µl) 1.25-2.5 µl 1.25-2.5 U / 50 µl
Total reaction volume 50 µl  

*Extension time should be set at 1 min per 1 kb of target length.

Application data

Example 1. Amplification of 180 bp–1.3 kb genes from human genomic DNA
Distinct and specific amplified bands from 180 bp to 1.3 kb were observed with rTaq DNA polymerase by 1% agarose gel electrophoresis.
Example 2.Amplification of the yeast actin and human 18s rRNA by RT-PCR
The single-enzyme RT-PCR with rTth DNA polymerase gave distinct amplification bands, whereas RT-PCR with M-MLV reverse transcriptase and rTaq DNA polymerase gave very faint bands.
Tap-201_Example 2.png

  1. F.C. Lawyer, S. Stoffel, R.K. Saiki, K. Myambo, R. Drummond, D.H. Gelfand., J. Biol. Chem., 264: 6427-6437 (1989)
  2. T. Nagahama, K. Sugiura, S. Lee, H. Morita, Y. Adachi, A.H. Kwon, Y. Kamiyama, S. Ikehara, Stem cells, 19: 425-435 (2001)


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