• USA Home
  • TAQL-RO - Taq DNA Polymerase, 1 U/μl


Taq DNA Polymerase, 1 U/μl

Synonym: dna amplification, pcr, polymerase, primer extension



Related Categories Molecular Biology, PCR/Amplification, Routine PCR Amplification More...
Quality Level   100
usage   sufficient for ≤2,000 reactions (11647687001)
  sufficient for ≤500 reactions (11647679001)
packaging   pkg of 1,000 U (11647687001 [4 x 250 U])
  pkg of 250 U (11647679001)
mfr. no.   Roche
parameter   72 °C optimum reaction temp.
optimum pH   ~9.0 (20 °C)
shipped in   dry ice
storage temp.   −20°C


General description

The enzyme was cloned in E.coli and is isolated to be free of unspecific endo- or exonucleases according to the current quality control procedurese. Taq DNA Polymerase is a highly processive 5′–3′ DNA polymerase that lacks 3′–5′ exonuclease activity. It consists of a single polypeptide chain with a molecular weight of approximately 95 kDa. The enzyme exhibits highest activity at a pH of around 9 (adjusted at 20 °C) and temperatures around +75 °C. Taq DNA Polymerase also accepts modified deoxyribonucleosidetriphosphates as substrates, and can be used to label DNA-fragments either with radionucleotides, digoxigenin, fluorescein or biotin.
The high processivity, absence of exonuclease activity and temperature optima of Taq DNA Polymerase enable the use of this enzyme in DNA sequencing, especially where the resolution of secondary structures plays a major role.

Other Notes

For life science research only. Not for use in diagnostic procedures.


This lower concentration of our recombinant Taq DNA Polymerase allows small amounts of the polymerase to be pipetted more accurately and conveniently. In all other respects, this preparation is identical to our higher concentration (5 U/μl) preparation and can be used for:
• Other primer-extension reactions, such as sequencing and labeling


1 kit containing 4 components

Unit Definition

One unit Taq DNA Polymerase is defined as the amount of enzyme that incorporates 10 nmol of total deoxyribonucleoside triphosphates into acid precipitable DNA within 60 min at +65 °C under the assay conditions stated above.

Unit Assay: Incubation buffer:
67 mM Tris/HCl; pH 8.3/25 °C, 5 mM MgCl2, 10 mM Mercaptoethanol, 0.2% Polydocanol, 0.2 mg/ml Gelatine, 0.2 mM each dATP, dGTP, dTTP and 0.1 mM dCTP.

Incubation procedure:
M13mp9ss, M13 primer (17mer) and 1 μCi (α-32P) dCTP are incubated with suitable dilutions of Taq DNA Polymerase in 50 μl incubation buffer at +65 °C for 60 minutes. The amount of incorporated dNTPs is determined by trichloroacetic acid precipitation.

Volume Activity: 1 U/μl

Legal Information

Use of this product is covered by US patent claims and corresponding patent claims outside the US. The purchase of this product includes a limited, non-transferable immunity from suit under the foregoing patent claims for using only this amount of product for the purchaser′s own internal research. No right under any other patent claim, no right to perform any patented method, and no right to perform commercial services of any kind, including without limitation reporting the results of purchaser′s activities for a fee or other commercial consideration, is conveyed expressly, by implication, or by estoppel. This product is for research use only. Diagnostic uses under Roche patent claims require a separate license from Roche. Further information on purchasing licenses may be obtained by contacting the Director of Licensing, Applied Biosystems, 850 Lincoln Centre Drive, Foster City, California 94404, USA.

Kit component only


Product #

Add to Cart

Taq DNA Polymerase 1 U/μl    
PCR Buffer with MgCl<sub>2</sub> 10x concentrated    
MgCl<sub>2</sub> Stock Solution    
PCR Buffer without MgCl<sub>2</sub>    
Safety & Documentation

Safety Information

NONH for all modes of transport


Certificate of Analysis (COA)

Please Enter a Lot Number
Protocols & Articles


Roche PCR Reagents and PCR Protocols

For additional information on Hot Start PCR technology, protocols, and to download our free Hot Start PCR eBook, please visit our Hot Start PCR resource guide.
Keywords: Amplification, Cloning, Gas chromatography, Gene expression, Polymerase chain reaction, Polymerase chain reaction - quantitative, Purification, Sequencing, Transcription

Related Content

PCR Selection Guide

We offer a wide variety of PCR enzymes, master mixes, and PCR protocols to meet your experimental needs for routine PCR, qPCR, or RT-PCR. Our PCR Selection Guide features various filters to sort by, ...
Keywords: Genomics, Polymerase chain reaction, Polymerase chain reaction - quantitative

Peer-Reviewed Papers


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?