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National Repository of Grey Literature 1 records found  Search took 0.05 seconds. 
Possibility of Using Purine Oxidation Signals for DNA Sequence Analysis
 Špaček, Jan ; Cahová, Kateřina ; Havran, Luděk ; Fojta, Miroslav
Signals provided by electrochemical oxidation of single stranding DNA on the surface of pyrolytic graphite electrode, which correspond to the oxidation of adenine and guanine (A and G) are known for over forty years. The mechanism of oxidation of free A and G as well as nucleoside mono-, and triphosphates of these bases is know but the mechanism of oxidation of purines in the DNA still remains unexplained. Ratiometry of A and G signals could be a new tool for DNA sequence analysis, if signals of A and G oxidation obtained from single-stranded DNA adsorbed at the electrode surface are proportional to the number of oxidized As and Gs in studied samples. Our preliminary results suggest that there is a correlation, yet we encountered problems, which yet has to be addressed and explained before this method could be applied for DNA analysis.
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