Detection of DNA Deoxyribophosphodiesterase Activity

  • Margarita Sandigursky
  • William A. Franklin
Part of the Methods in Molecular Biology™ book series (MIMB, volume 152)


The major pathway for the removal of oxidative base damage is the DNA base excision repair pathway, found in prokaryotes and eukaryotes (1). In this pathway, oxidized DNA bases are removed by specific DNA glycosylases, leaving apurinic/apyrimidinic (AP) sites in the DNA (1,2). AP sites can also arise spontaneously in DNA through depurination (3) and, being devoid of genetic information, can be both cytotoxic and mutagenic lesions (4, 5, 6). Several DNA glycosylases have been found that convert a variety of damaged nucleotide residues to AP sites by removing deaminated, oxidized, or alkylated bases from DNA. Uracil, either misincorporated in place of thymine or resulting from deamination of cytosine, is removed by a specific glycosylase, uracil-DNA glycosylase, found in prokaryotes and eukaryotes (1,4).


Elution Position Klenow Enzyme Swing Bucket Rotor Sodium Thioglycolate Oxidative Base Damage 
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Copyright information

© Humana Press Inc. 2000

Authors and Affiliations

  • Margarita Sandigursky
    • 1
  • William A. Franklin
  1. 1.Department of Radiology and Radiation OncologyAlbert Einstein College of MedicineBronx

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