A multiplex PCR assay consisting of 13 Rapidly Mutating Y STR loci called RM-Yplex was developed. Platinum® Taq DNA polymerase was used to amplify the 13 Y STR loci in a single reaction in approximately 2.5 hours . In order to shorten the process with reliable results, several DNA polymerases were tested with the multiplex. Phusion® Flash High Fidelity and Platinum® Taq DNA polymerases were inv...

An allylic adenosine triphosphate analog (AATP) was tested as a substrate for commercially available DNA polymerases. All but one of the enzymes assayed incorporated AATP opposite thymidine (T) with concomitant termination of the elongation reaction. A concentration of only 1 microM was sufficient for complete termination of the polymerization reaction for a short template mediated by Ampli Taq...

The Applied Biosystems PRISM fluorescence-based genotyping system as well as the Invitrogen TA Cloning vector system are influenced by the tendency of Taq DNA polymerase to add an adenine nucleotide to the 3' end of PCR products after extension. Incomplete addition of adenine to a majority of PCR product strands creates problems in allele-calling during genotyping and potentially diminishes the...

PCR co-amplification of two distinct HIV1 tat gene sequences lead to the formation of recombinant DNA molecules. The frequency of such recombinants, up to 5.4% of all amplified molecules, could be decreased 2.7 fold by a 6 fold increase in Taq DNA polymerase elongation time. Crossover sites mapped essentially to three discrete regions suggesting specific Taq DNA polymerase pause or termination ...

Few techniques are available to detect DNA lesions in cultured cells at the nucleotide level (8). One such method is primer extension of genomic DNA (5) that may be improved using linear amplification by repeated PCR cycles (1,11). This method has been used successfully to map the genomic sites of topoisomerase II (2,3,7) and topoisomerase I activity (10). DNA topoisomerases modulate DNA struct...

The structure of Leishmania major pteridine reductase (PTR1) in complex with NADPH and the inhibitor 2,4,6-triaminoquinazoline (TAQ) has been solved in a new crystal form by molecular replacement and refined to 2.6 A resolution. The inhibitor mimics a fragment, the pterin head group, of the archetypal antifolate drug methotrexate (MTX) and exploits similar chemical features to bind in the PTR1 ...

Background: Taq DNA polymerase is a very important enzyme for molecular biological studies such as DNA amplification and DNA sequencing by the PCR. It is a standard enzyme that is used in 90% of molecular biology labs today. The aim of this study was to produce Taq DNA polymerase enzyme in E. coli by a reliable, practical, simple and low cost method. Materials and Methods: In this study, the T...