- Hotstart activity
- No primer dimers
- No non-specific products
- TA cloning
HotGoldStar is a recombinant Taq DNA polymerase isolated from extremely thermostable clones. It is purified from an E. coli strain, which carries a Thermus species DNA polymerase overproducing plasmid. It is a modified Taq polymerase, which completely lacks any activity below 74 °C that avoids non-specific priming at low temperature. HotGoldStar requires a thermal activation of 10 minutes at 95 °C to reach maximal initial activity. During the PCR the rest of its activity is released. It is heat-degraded in a much lower rate as commonly used Taq DNA polymerase.
Activity
The enzyme has a 5’ ’ 3’ polymerization-dependent exonuclease replacement activity but lacks a 3’ ’ 5’ exonuclease proofreading activity. The enzyme has the “extendase” activity allowing TA cloning.
Application
DNA fragments as long as 2 kb can be efficiently amplified. Thanks to its hotstart activity the HotGoldStar DNA polymerase will provide efficient amplification of specific products without amplifying non-specific products or primer dimers. This Taq DNA polymerase is optimal for Real-Time qPCR.