Description
OneTaq Hot Start Quick-Load 2X Master Mix with Standard Buffer is an optimized, ready-to-use blend of Taq and Deep Vent DNA Polymerases combined with an aptamer-based inhibitor. This enzyme blend is ideally suited to routine PCR applications from a variety of templates, including pure DNA solutions, bacterial colonies and cDNA products. The 3´→5´ exonuclease activity of Deep Vent DNA Polymerase increases the fidelity and robust amplification of Taq DNA Polymerase (1). The hot start nature of the enzyme offers convenience with decreased interference from primer dimers and secondary products. The convenient Quick-Load master mix formulation contains dNTPs, MgCl2, buffer components and stabilizers as well as two commonly used tracking dyes for DNA gels. On a 1% agarose gel in 1X TBE, Xylene Cyanol FF migrates at ~3-5 kb and Tartrazine migrates at ~50 bp. Both dyes are present in concentrations that do not mask co-migrating DNA bands.
Comparison of OneTaq Products to Other Commercially Available Polymerases
Amplification of a selection of high GC human genomic DNA targets demonstrates OneTaq performance. All polymerases were cycled according to manufacturer’s recommendations, including the use of additives to enhance the amplification of targets with high GC content. Yield (dot size) and purity (color) of reaction product were quantified from triplicate reactions on a Perkin Elmer LabChip®. A large, dark green dot represents the highest yield and purity.
Figure 1: Migration of tracking dyes contained in Quick-Load® PCR reagents during electrophoresis

Quick-Load PCR reagents enable direct loading of PCR products onto agarose DNA gels for analysis. Quick-Load amplification products deliver the same performance as their non-Quick-Load equivalents, while incorporating two PCR-inert tracking dyes for enhanced visualization. During gel electrophoresis, the blue Xylene Cyanol FF dye co-migrates with DNA fragments of approximately 3-5 kb in a 1% agarose gel, while the yellow Tartrazine dye migrates at approximately 50 bp for clear monitoring of both large and small DNA fragments. Additionally, the combination of the blue and yellow dyes results in a green reagent that enables visual tracking of reaction set up..
![[Icon] Use our Tm Calculator to determine your primers' optimal annealing temperature.](https://media.neb.com/asset/46e6c17d-deda-4972-a20c-2c3463d03d8b/Webp_JPG_PSD/TmCalculator_Banner.webp?=)
Product Source
An E. coli strain that carries the Taq DNA Polymerase gene from Thermus aquaticus YT-1 and an E. coli strain that carries the Deep Vent® DNA Polymerase gene from Pyrococcus species GB-D.
- This product is related to the following categories:
-
OneTaq® DNA Polymerases,
-
Taq DNA Polymerase,
-
Master Mixes,
- This product can be used in the following applications:
-
Hot Start PCR,
-
Multiplex PCR,
-
Specialty PCR,
-
Routine PCR,
PCR