Navigation Links
Uracil-DNA Glycosylase

for prevention of carry-over contamination in PCR Cat. No. 1 444 646 100 units
Cat. No. 1 269 062 25 units Description Uracil-DNA Glycosylase (UNG) (from E. coli) catalyzes the removal of uracil from single- and double-stranded DNA that has been synthesized in the presence of dUTP. The apyriminic sites formed by UNG are susceptible to cleavage by heat under alkaline conditions (carry-over prevention). UNG will not digest 3'-terminal dU, dUTP, primers labeled with biotin-dUTP, or digoxigenin-dUTP. Ribouracil residues in RNA are also unaffected by UNG. Application Prevention of carry-over contamination in:
  • PCR with Taq DNA Polymerase.
  • RT-PCR with C. therm. Polymerase One-step RT-PCR System.
Operating parameters
  • Substrate: Single- or double-stranded DNA containing deoxyuracil (DNA synthesized in the presence of dUTP).
  • Incubation conditions for cleavage of uracil-glycosidic bonds: 20C, 110 min.
  • Thermal stability (pH 8.3): half-life at 40C, 2 min; half-life at 45C, 0.5 min.
  • MgCl2 concentration: 2.5 mM.
  • dNTP concentration: 200 M dNTPs; 600 M dUTP.
  • Conditions for inactivation of enzyme: 95C, 2 min.

Notes:

UNG (2 units) will degrade up to 106 uracil-containing DNA molecules in 10 min. In contr ast to the enzyme from E. coli, heat-labile UNG will not modify dU-containing PCR products for at least several hours at 4C. Therefore, it is not necessary to freeze dU-containing PCR products immediately after amplification, or to hold the reaction mixture at 72C until it is used. However, note that after prolonged storage (>8 h) residual enzyme activity may lead to degradation of PCR product. For long term storage, PCR product should therefore be frozen at 20C.

Key advantages
  • Prevents carry-over contamination in PCR, because the enzyme modifies all uracil-containing products from previous PCRs. These products are then hydrolyzed by heat under alkaline conditions.
  • Does not degrade native (thymidine-containing) templates, because the enzyme is free of contaminating exo- and endonucleases.
  • Does not interfere with PCR amplification, because the enzyme is not active at temperatures typically used for PCR applications.

'"/>

Source:


Page: All 1 2

Related biology technology :

1. Preventing Carry-over Contamination with Uracil-DNA Glycosylase
2. Uracil-DNA Glycosylase, heat-labile
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/27/2016)... Chapel Hill, N.C. (PRWEB) , ... June 27, ... ... of U.S. commercial operations for Amgen, will join the faculty of the ... will serve as adjunct professor of strategy and entrepreneurship at UNC Kenan-Flagler, with ...
(Date:6/24/2016)... , June 24, 2016 Epic ... sensitively detects cancers susceptible to PARP inhibitors by ... tumor cells (CTCs). The new test has already ... therapeutics in multiple cancer types. Over ... DNA damage response pathways, including PARP, ATM, ATR, ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... announce the launch of their brand, UP4™ Probiotics, into Target stores nationwide. The ... is proud to add Target to its list of well-respected retailers. This list ...
(Date:6/23/2016)... June 23, 2016 Houston Methodist Willowbrook ... Cy-Fair Sports Association to serve as their official ... Houston Methodist Willowbrook will provide sponsorship support, athletic ... with association coaches, volunteers, athletes and families. ... Cy-Fair Sports Association and to bring Houston Methodist ...
Breaking Biology Technology:
(Date:5/9/2016)... , UAE, May 9, 2016 ... it comes to expanding freedom for high net worth ... Even in today,s globally connected world, there is still ... system could ever duplicate sealing your deal with a ... second passports by taking advantage of citizenship via investment ...
(Date:4/28/2016)... 28, 2016 First quarter 2016:   ... compared with the first quarter of 2015 The gross ... M (loss: 18.8) and the operating margin was 40% (-13) ... Cash flow from operations was SEK 249.9 M (21.2) , ... is unchanged, SEK 7,000-8,500 M. The operating margin for ...
(Date:4/19/2016)... , UAE, April 20, 2016 ... implemented as a compact web-based "all-in-one" system solution for ... biometric fingerprint reader or the door interface with integration ... modern access control systems. The minimal dimensions of the ... readers into the building installations offer considerable freedom of ...
Breaking Biology News(10 mins):