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Uracil-DNA Glycosylases (UDGs)

Carryover Prevention for qPCR and RT-qPCR

Uracil-DNA Glycosylase (UDG) catalyses the release of free uracil from uracil-containing DNA. UDG efficiently hydrolyzes uracil from single-stranded or double-stranded DNA. This helps preserve the integrity of DNA samples and improves the accuracy and reliability of your PCR and RT-qPCR reactions. At Fortis we have three UDGs options available and they can be customized to fit your needs!


The following experiments compare UDGs in a qPCR assay using primers and probe specific to a uracil-containing template. The uracil-containing template is a representation of carry-over contamination. A No-UDG Control (red) is included to demonstrate product digestion. ΔCq measures product digestion by calculating the difference with and without treatment of each UDG. The greater the ΔCq, the more efficient product digestion.

Close up image of scientist hand with reaction tubes to represent Uracil-DNA Glycosylases and their significance in PCR and qPCR
Fortis Cod UNG (blue) vs. ArcticZymes (orange). Control (red) demonstrates product digestion after a 5 minute incubation at 25 °C.

Fortis Cod UNG (blue) vs. ArcticZymes (orange). Control (red) demonstrates product digestion after a 5 minute incubation at 25 °C.

Fortis Termolabile UDG (blue) vs. NEB (orange). Control (red) demonstrates product digestion after a 2 minute incubation at 25 °C.

Fortis Termolabile UDG (blue) vs. NEB (orange). Control (red) demonstrates product digestion after a 2 minute incubation at 25 °C.

Fortis E. coli UDG (blue) vs. NEB (orange). Control (red) demonstrates product digestion after a 10 minute incubation at 30 °C.

Fortis E. coli UDG (blue) vs. NEB (orange). Control (red) demonstrates product digestion after a 10 minute incubation at 30 °C.

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Fortis Cod UNG (blue) vs. ArcticZymes (orange). Control (red) demonstrates product digestion after a 5 minute incubation at 25 °C.