- Efficient – highly productive target amplification and removal of 3’ A overhangs from amplicons up to 5 kb in length
- Accurate – possesses 3’ - 5’ proofreading exonuclease activity that delivers an error rate of 3.0 x 10-6 for increased PCR fidelity versus Taq DNA polymerase
- Sensitive – high-yield amplification from limiting amounts of human, animal and plant template DNA
- Robust – developed for reliable amplification of even the most challenging targets, including genomic DNA and GC-rich amplicons
- Flexible – ideal for amplifying any target up to 5 kb from DNA extracted from mammalian tissue samples
- Convenient – advanced buffering system minimizes the requirements for PCR optimization thereby reducing time to results and eliminating the cost of unnecessary repeats
ACCUZYME is recommended for all routine cloning applications. ACCUZYME is a proprietary proofreading enzyme that offers increased-fidelity and high PCR yield, even in demanding applications. ACCUZYME has an error-rate of 3.0 x 10-6 and results in blunt-ended amplicons of up to 5 kb in length, making it ideal for use in cloning and site-directed mutagenesis.
ACCUZYME is supplied with a buffering system that provides ideal conditions for most assays. Consequently, the cost and effort typically associated with optimizing assay performance is often eliminated. However, in circumstances where further optimization is required to improve PCR specificity and/or yield, ACCUZYME includes an additional vial of MgCl2.
- Routine cloning applications requiring increased PCR yield
- Blunt-end cloning
- Site-directed mutagenesis
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Product SelectionPlease refer to the PCR Selection Chart to confirm the recommended product for your PCR application.
Certification of Analysis (COAs)
ACCUZYME DNA Polymerase
2 x 1.2 mL
50 mM MgCl2 Solution
Storage & Stability
All components should be stored at -20°C upon receipt for optimum stability. Repeated freeze/thaw cycles should be avoided.
When stored under the recommended conditions and handled correctly, full activity of the reagents is retained until the expiry date indicated on the outer box label.
On Dry Ice or Blue Ice.
ACCUZYME DNA polymerase has an extremely fast extension rate compared to other proofreading enzymes, which are naturally slower than non-proofreading polymerases due to their ability to go back and correct nucleotide mis-incorporations. These polymerases will extend at a rate of as little as 30 s/kb, depending on the template amplified. Extension should be carried out at 68°C for optimal results.
Please Note: We do not recommend the storage of our polymerases at -80 °C as ice crystals could form on the active site, which may affect or destroy the activity of the enzyme.
|No or low PCR yield||Enzyme concentration too low – increase the amount of enzyme in 0.5 U increments.|
|Primers degraded – check quality and age of the primers.|
|Magnesium concentration too low – increase concentration in 0.25 mM increments with a starting concentration of 1.75 mM.|
|Primer concentration not optimized. Titrate primer concentration (0.3-1 µM); ensuring that both primers have the same concentration.|
|Template concentration too low – Increase concentration of template.|
|Perform a positive control to ensure that the enzyme, dNTPs and buffers are not degraded and/or contaminated.|
|Multiple Bands||Primer annealing temperature too low. Increase annealing temperature. Primer annealing should be at least 5°C below the calculated Tm of primers.|
|Prepare master mixes on ice or use a heat-activated polymerase.|
|For problems with low specificity. Try adding 3% DMSO (not supplied) to improve specificity.|
|Smearing or artifacts||Template concentration too high. Prepare serial dilutions of template.|
|Too many cycles. Reduce the cycle number by 3-5 to remove non-specific bands.|
|Enzyme concentration too high - decrease the amount of enzyme in 0.5 U increments.|
|Extension time too long. Reduce extension time in 0.5-1 minute increments.|