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Endonuclease VIII, E. coli
Endonuclease VIII, E. coli

Endonuclease VIII from E. coli acts as both an N-glycosylase and an AP-lyase. The N-glycosylase activity releases damaged pyrimidines from double-stranded DNA, generating an apurinic (AP site).
 
Name Cat# Size Concentration Price Qty
Endonuclease VIII
ENVIII-100
50 μg
1 mg/ml
please inquire
Endonuclease VIII
ENVIII-200
1 mg
1 mg/ml
please inquire
Endonuclease VIII
ENVIII-300
100 mg
10 mg/ml
please inquire
Endonuclease VIII
ENVIII-400
1 g
10 mg/ml
please inquire
Endonuclease VIII
ENVIII-OEM
Any size
please inquire

Description
Endonuclease VIII from E. coli acts as both an N-glycosylase and an AP-lyase. The N-glycosylase activity releases damaged pyrimidines from double-stranded DNA, generating an apurinic (AP site). The AP-lyase activity cleaves 3´ and 5´ to the AP site leaving a 5´ phosphate and a 3´ phosphate. Damaged bases recognized and removed by Endonuclease VIII include urea, 5, 6- dihydroxythymine, thymine glycol, 5-hydroxy-5- methylhydantoin, uracil glycol, 6-hydroxy-5, 6-dihydrothymine and methyltartronylurea. While Endonuclease VIII is similar to Endonuclease III, Endonuclease VIII has β and δ lyase activity while Endonuclease III has only β lyase activity.

Applications
Single cell gel electrophoresis (Comet assay)
Alkaline elution
Alkaline unwinding

Source
E. coli
Purity
> 95 % as determined by SDS-PAGE

Storage
-80 Avoid repeated freeze-thaw cycles.

Unit Definition
One unit is defined as the amount of enzyme required to cleave 1 pmol of a 34 mer oligonucleotide duplex containing a single AP site* in a total reaction volume of 10 µl in 1 hour at 37°C in 1X Endonuclease VIII Reaction Buffer containing 10 pmol of fluorescently labeled oligonucleotide duplex.

* An AP site is created by treating 10 pmol of a 34 mer oligonucleotide duplex containing a single uracil residue with 1 unit of Uracil-DNA Glycosylase (UDG) for 2 minutes at 37°C.

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