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Chemistry. 2013 Sep 16;19(38):12720-31. doi: 10.1002/chem.201301868. Epub 2013 Aug 9.

Benzofurazane as a new redox label for electrochemical detection of DNA: towards multipotential redox coding of DNA bases.

Author information

  • 1Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Gilead Sciences and IOCB Research Center, Flemingovo nam. 2, 16610 Prague 6 (Czech Republic), Fax: (+420) 220-183-559.


Benzofurazane has been attached to nucleosides and dNTPs, either directly or through an acetylene linker, as a new redox label for electrochemical analysis of nucleotide sequences. Primer extension incorporation of the benzofurazane-modified dNTPs by polymerases has been developed for the construction of labeled oligonucleotide probes. In combination with nitrophenyl and aminophenyl labels, we have successfully developed a three-potential coding of DNA bases and have explored the relevant electrochemical potentials. The combination of benzofurazane and nitrophenyl reducible labels has proved to be excellent for ratiometric analysis of nucleotide sequences and is suitable for bioanalytical applications.

Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


DNA polymerase; electrochemistry; nucleoside triphosphates; sequencing; voltammetry

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