Spectroscopic and calorimetris investigation of flavin-mononucleotide - DNA system

  • E. G. Bereznyak Institute of Radiophysics and Electronics, NAS of Ukraine
  • N. A. Gladkovskaya Institute of Radiophysics and Electronics, NAS of Ukraine
  • E. V. Dukhopelnikov Institute of Radiophysics and Electronics, NAS of Ukraine
  • A. S. Khrebtova Institute of Radiophysics and Electronics, NAS of Ukraine
  • A. V. Zinchenko Institute of Problems of Cryobiology and Cryomedicine, NAS of Ukraine
Keywords: flavin - mononucleotide, DNA, calorimetry, spectrophotometry, binding parameters

Abstract

The interaction of flavin – mononucleotide (FMN) with salmon testes DNA is investigated by differential
scanning calorimetry, spectrophotometry, and fluorescent spectroscopy. It is shown that the addition of FMN to
DNA doesn't change DNA melting parameters significantly. The binding constant K = 50 М-1 for the
interaction of FMN with DNA is calculated from spectrophotometric data. Such value of the binding constant
is incomparably smaller than binding constants for the biologically active ligand to DNA and the constants for
ligand - FMN heteroassotiation.

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Author Biographies

E. G. Bereznyak, Institute of Radiophysics and Electronics, NAS of Ukraine

12 Ak. Proskura Str., Kharkov, 61085, Ukraine

N. A. Gladkovskaya, Institute of Radiophysics and Electronics, NAS of Ukraine

12 Ak. Proskura Str., Kharkov, 61085, Ukraine

E. V. Dukhopelnikov, Institute of Radiophysics and Electronics, NAS of Ukraine

12 Ak. Proskura Str., Kharkov, 61085, Ukraine

A. S. Khrebtova, Institute of Radiophysics and Electronics, NAS of Ukraine

12 Ak. Proskura Str., Kharkov, 61085, Ukraine

A. V. Zinchenko, Institute of Problems of Cryobiology and Cryomedicine, NAS of Ukraine

23 Pereyaslavskaya st., Kharkiv, 61015,Ukraine
е-mail: berez@ire.kharkov.ua

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How to Cite
Bereznyak, E. G., Gladkovskaya, N. A., Dukhopelnikov, E. V., Khrebtova, A. S., & Zinchenko, A. V. (1). Spectroscopic and calorimetris investigation of flavin-mononucleotide - DNA system. Biophysical Bulletin, 1(24). Retrieved from https://periodicals.karazin.ua/biophysvisnyk/article/view/3865