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D4812 Sigma-Aldrich

REDAccuTaq® LA DNA Polymerase

High fidelity Taq with inert dye, 10X buffer included



Related Categories Long & Accurate PCR, Molecular Biology, PCR/Amplification More...
Quality Level   200
form   liquid
feature   hotstart: no
concentration   1 unit/μL
color   red
shipped in   wet ice
storage temp.   −20°C


General description

REDAccuTaq LA DNA polymerase allows for quick recognition in high throughput applications as well as direct loading of amplification products onto agarose gels for electrophoresis. The inert red dye has no effect on automated sequencing, restriction enzyme digestion, ligation, or other downstream manipulations. However, the PCR product is easily separated from the dye by standard purification methods.

Other Notes

REDAccuTaq® LA DNA polymerase is a blend of Sigma′s high quality Taq DNA polymerase, a small amount of an additional polymerase that exhibits 3′→5′ exonuclease or proofreading activity, and our inert red dye. By blending the Taq with the right amount of this proofreading enzyme, misincorporation errors are corrected, producing PCR amplicons that are longer and more accurate.

Store REDAccuTaq LA DNA Polymerase and AccuTaq LA 10x Buffer at –20 °C.


Produce long DNA amplicons for:
• Mutation analysis
• Cloning genes
• DNA sequencing
• cDNA library generation

Features and Benefits

• Increased fidelity, up to 6.5× that of Taq DNA polymerase
• Efficiently and accurately produce amplicons up to 22 kb on genomic templates and up to 40 kb on less complex templates such as lambda or bacterial DNA
• Visual confirmation that enzyme has been added, and proper mixing has occurred
• No additional loading dyes needed. A post-reaction aliquot can be directly used on an agarose gel for electrophoresis


The enzyme is provided with an optimized 10× reaction buffer for enhanced amplification of complex templates.

Unit Definition

One unit incorporates 10 nmol of total dNTPs into acid-precipitable DNA in 30 min. at 74 °C.

Legal Information

Use of this product is covered by one or more of the following US patents and corresponding patent claims outside the US: 5,789,224, 5,618,711, 6,127,155 and claims outside the US corresponding to expired US Patent No. 5,079,352. 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 patents 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.

REDAccuTaq is a registered trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles


Applications with REDTaq

Since its introduction, REDTaq has been well received by the scientific community. The original product idea was to add convenience to PCR by formulating a reaction that also contained loading buffer...
by Brian Ward and Keming Song
Sigma-Aldrich Corporation, St. Louis, MO, USA
Keywords: Amplification, Applications, Error, Melting, Methods, Nucleic acid annealing, Peptide synthesis, Polymerase chain reaction, Purification, Sequencing, transformation

End Point PCR Protocol for Long and Accurate DNA Amplification

Technology Overview Equipment Reagents Assay Considerations Procedure Troubleshooting Materials References
Keywords: Amplification, Buffers, Cloning, Digestions, Electrophoresis, Evaporation, Gas chromatography, Gel electrophoresis, Gene expression, Melting, Nucleic acid annealing, Nucleic acid denaturation, Peptide synthesis, Phase transitions, Polymerase chain reaction, Purification, Reductions, Sequencing, Size-exclusion chromatography, transformation

Long and Accurate PCR Amplification of DNA with RedAccuTaq D4812 Protocol

Reaction Optimization Reliable amplification of long DNA sequences requires: 1) effective denaturation of DNA template, 2) adequate extension times to produce large products and 3) protection of targ...
Keywords: AGE, Amplification, Buffers, Diagnostic, Electrophoresis, Evaporation, Gas chromatography, Gel electrophoresis, Melting, Nucleic acid annealing, Nucleic acid denaturation, Phase transitions, Polymerase chain reaction, Size-exclusion chromatography, Solvents

Related Content

Long & Accurate PCR

Many polymerase chain reaction (PCR) applications require longer read lengths, greater fidelity and higher yields than that which can be achieved with Taq DNA polymerase. Conventional Taq DNA polymer...
Keywords: Amplification, Cloning, Gene expression, Polymerase chain reaction, Size-exclusion chromatography

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

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92210 Timestrip Plus 0 °C
06693 Timestrip Plus -20 °C

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