Resolution of overlapped reduction signals in short hetero-oligonucleotides by elimination voltammetry

Warning

This publication doesn't include Faculty of Sports Studies. It includes Faculty of Science. Official publication website can be found on muni.cz.
Authors

MIKELOVÁ Radka TRNKOVÁ Libuše JELEN František ADAM Vojtěch KIZEK René

Year of publication 2007
Type Article in Periodical
Magazine / Source Electroanalysis
MU Faculty or unit

Faculty of Science

Citation
Field Electrochemistry
Keywords reduction signals;short hetero-oligonucleotides; elimination voltammetry
Description The resolution of overlapped reduction voltammetric signals of adenine (A) and cytosine (C) residues in short synthetic hetero-oligodeoxynucleotides (ODNs) with different sequences of A and C, but with the same ratio (A/C = 1/3), was carried out by elimination voltammetry with linear scan (EVLS). The EVLS, as a mathematical transformation of voltammetric total currents measured at different scan rates, is capable to yield very sensitive resolution of potentially closed signals, which cannot be separated by common electrochemical methods. The best resolution of A and C signals was observed when the EVLS function eliminating the charging and kinetic currents and conserving the diffusion current was combined with adsorption stripping technique (AdS). The resulting peak-counterpeak signal made it possible not only to separate the responses of A and C residues, but also to follow the dynamics of adsorption processes on mercury electrode surfaces. Together with the effect of the accumulation time on peak-counterpeak signal, the effect of pH and temperature on this signal was studied. The relation between elimination signals and the structure changes of ODNs was discussed.
Related projects:

You are running an old browser version. We recommend updating your browser to its latest version.

More info