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Reagents for Genetic Engineerring

Taq DNA polymerase Economy (+dNTPs), with Robust Buffer



Thermus aquaticus DNA polymerase (Taq DNA polymerase) was expressed in E. coli in large quantities and highly purified. The enzyme has thermostable DNA polymerase activity and the MW is 94 kDa. This enzyme is suitable for PCR reactions; capable of amplifying DNA with various primers.


1) High-throughput PCR
2) Colony PCR
3) Incorporation of dUTP, dITP, and fluorescence-labeled nucleotides
4) Primer extension
5) Addition of a single nucleotide (adenosine) at the 3’-blunt ends for cloning into TA vector.

General composition of PCR reaction mixture (total 50ul)
Taq DNA polymerase (5 units/ul) 0.25 ml*
10 x Robust Buffer (Taq) 5 ml
2.5mM (each) dNTPs 4ml
Template <500ng
Primer 1 0.2`1.0mM (final conc.)
Primer 2 0.2`1.0mM (final conc.)
Sterile distilled water up to 50ml

*Use of excess amount of the enzyme is not recommended.


< Concentration >
5 units/ul, where one unit is defined as the amount of enzyme that can incorporate 10 nmols of total dNTPs into an acid-insoluble material in 30 minutes at 74Ž when activated salmon sperm DNA was used as template/primer.

< Quality Assurance >
Greater than 95% purity as determined by SDS-PAGE (CBB staining) (Fig.1) The absence of endonucleases and exonucleases was confirmed.

< PCR Test >
Good amplification result was obtained in PCR reaction using λDNA as a template up to 14 kB (Fig.2).

< SDS-PAGE of Taq DNA polymerase >

< PCR products obtained by using Robust buffer (agarose gel electrophoresis) >
Examples of PCR coditions for the amplification of various sizes of λDNA

NOTE : Cautions for usage of Robust Buffer (Taq)
Robust Buffer induces maximum enzymatic activity. Therefore, cares should be taken to avoid production of undesirable smear bands in gel electrophoresis analysis by longer than optimal reaction time. We recommend about 5 to 10 seconds / kb elongation time for template up to 8 kb, and about 15 seconds / kb for up to 14 kb. We will recommend roughly the same elongation time to be set with 2-step PCR (shuttle PCR) and 3-step PCR. Extend the elongation time by short steps when amplification is not seen. The results of your experiments can be observed more rapidly by adopting 2-step PCR.

Product List

Product Name Cat# Quantity Price

Taq DNA polymerase Economy (+dNTPs) with Robust buffer DataSheet ,


200 UNIT ¥5,100

Taq DNA polymerase Economy (+dNTPs) with Robust buffer DataSheet ,


5*200 UNIT ¥20,400

To be used for research only. DO NOT use for human gene therapy or clinical diagnosis.

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