The Taq DNA polymerase activity is inactivated by combining the enzyme with JumpStart™ Taq antibody, a neutralizing monoclonal antibody to Taq DNA polymerase. Antibody inactivation provides a simple, efficient procedure for hot-start polymerase chain reaction (PCR). Hot start PCR can significantly improve the results of DNA amplification by reducing the generation of nonspecific amplification products and primer-dimer artifacts. When used in PCR, JumpStart Taq DNA polymerase is inactive at low (room) temperature. When the temperature is raised above 70 °C in the first denaturation step of the cycling process, the complex dissociates and the polymerase becomes fully active.
JumpStart™ Taq DNA polymerase has been used:
- In the PCR amplification of DNA isolated from herbarium specimens.
- In the PCR reaction mixture for randomly amplified polymorphic DNA polymerase chain reaction (RAPD PCR).
- To amplify and detect a point mutation in the EGFR exon 19 using specific cancer cell lines.
- In real-time quantitative PCR
- For PCR amplification of complex genomic or cDNA templates
- For the PCR amplification of very low-copy number targets
- For the PCR amplification of many thermal cycles (>35), and multiple primer pairs in the same reaction tube
- For PCR amplifications that require reduced non-specific amplification
- For multiplex PCR
- For reduction of primer dimers
Features and Benefits
- Reduces non-specific amplification
- Increases PCR specificity and yield
- Reduces set-up time concerns associated with manual or wax Hot Start methods
- Activation time of less than 1 minute
JumpStart Taq DNA Polymerase is provided with a 10× reaction buffer available with and without MgCl2. The magnesium free 10× buffer also includes a separate tube of 25 mM MgCl2 for optimization.
Supplied with 10× reaction buffer without MgCl2. Includes a separate tube of 25 mM MgCl2
Sigma′s JumpStart Taq DNA Polymerase is an antibody-inactivated hot-start enzyme designed to minimize non-specific amplification while increasing target yield. Once the reaction temperature reaches 70°C, Taq DNA polymerase activity is restored and the resulting PCR exhibits a higher specificity and yield. This antibody-enzyme complex allows for easy and convenient set-up with less contamination risk than manual hot-start techniques. The enzyme may also be included in the master mix preparation resulting in more consistency from one reaction to the next.
View more detailed information on JumpStart Taq enzymes at www.sigma-aldrich.com/hotstart.
One unit incorporates 10 nmol of total dNTPs into acid-precipitable DNA in 30 min at 74 °C.
Use of this product is covered by one or more of the following US patents and corresponding patent claims outside the US: US 8,404,464 and US 7,972,828. The purchase of this product includes a limited, non-transferable immunity from suit under the foregoing patent claims.
Antibody licensed for in vitro research use under U.S. Patent No. 5,338,671 and 5,587,287, and corresponding patents in other countries.
JumpStart is a trademark of Sigma-Aldrich Co. LLC