Skip to Content
Merck
All Photos(5)

Documents

SRE0112

Sigma-Aldrich

Heat-labile Cod Uracil-DNA Glycosylase

recombinant, expressed in E. coli, Triton-free and Glycerol-free

Synonym(s):

UDG, UNG

Sign Into View Organizational & Contract Pricing


About This Item

recombinant

expressed in E. coli

Quality Level

composition

Triton-free and Glycerol-free

shipped in

dry ice

storage temp.

−20°C

General description

Uracil-DNA glycosylases are DNA repair enzymes that participate in the base excision repair pathway. UracilDNA Glycosylase, also known as UNG or UDG, is an enzyme that hydrolyses the N-glycosylic bond between the deoxyribose sugar and the base in uracil-containing DNA leaving an abasic (apyrimidinic) site in DNA. Contamination of PCR samples with amplicon DNA generated by previous reactions, “carry-over contamination”, is one of the major sources of false positive results. Heat-labile Cod Uracil-DNA Glycosylase prevents carry-over contamination in PCR, qPCR, RT-qPCR, and RT-LAMP assays. The enzyme is produced in a recombinant E.coli (ung–) strain that contains a modified Cod UNG gene.

Specificity

One Unit is defined as the amount of enzyme that liberates 1 nmol Uracil per hour from Uracil-labelled DNA at 37°C in 70 mm Tris-HCI pH 8.0 (@25°C), 10 mM NaCI, 1 mM EDTA and 0.1 mg/ml BSA.

Application

Heat-labile Cod Uracil-DNA Glycosylase eliminates carry-over contamination in PCR, RT-PCR, RT-qPCR, qPCR and RT-LAMP

Features and Benefits

  • Heat inactivation: The only UNG that is completely and irreversibly heat inactivated thus ensuring long-term sample integrity for subsequent post-PCR analysis such as cloning, sequencing or genotyping
  • Cod UNG is not active on uracil in RNA.
  • High sensitivity: Remove more than 108 copies of contaminating DNA without affecting the sensitivity (Cq) of the assay
  • Simple protocol: Applying Cod UNG in a RT-PCR is done by a 5 min Cod UNG preincubation step at RT prior to the amplification reaction

Reconstitution

In solution

Other Notes

This product is for R&D use only. Not for drug, household, or other uses.

Storage Class Code

12 - Non Combustible Liquids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service