Articles | Volume 2, issue 1
Research article
13 Apr 2021
Research article |  | 13 Apr 2021

Exchange interaction in short-lived flavine adenine dinucleotide biradical in aqueous solution revisited by CIDNP (chemically induced dynamic nuclear polarization) and nuclear magnetic relaxation dispersion

Ivan V. Zhukov, Alexey S. Kiryutin, Mikhail S. Panov, Natalya N. Fishman, Olga B. Morozova, Nikita N. Lukzen, Konstantin L. Ivanov, Hans-Martin Vieth, Renad Z. Sagdeev, and Alexandra V. Yurkovskaya

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Short summary

Cited articles

Adhikary, A., Kumar, A., Khanduri, D., and Sevilla, M. D.: Effect of Base Stacking on the Acid-Base Properties of the Adenine Cation Radical [A+] in Solution: ESR and DFT Studies, J. Am. Chem. Soc., 130, 10282–10292,, 2008. 
Ahmad, M.: Photocycle and Signaling Mechanisms of Plant Cryptochromes, Curr. Opin. Plant Biol., 33, 108–115,, 2016. 
Antill, L. M. and Woodward, J. R.: Flavin adenine dinucleotide photochemistry is magnetic field sensitive at physiological pH, J. Phys. Chem. Lett., 9, 26910–2696,, 2018. 
Berman, H. M., Westbrook, J., Feng, Z., Gilliland, G., Bhat, T. N., Weissig, H., Shindyalov, I. N., and Bourne, P. E.: The Protein Data Bank, Nucleic Acids Res., 28, 235–242,, 2000. 
Bruns, C. M. K. and Andrew, P.: Refined Crystal Structure of Spinach Ferredoxin Reductase at 1.7 Å Resolution: Oxidized, Reduced and 2-Phospho-5-AMP Bound States, J. Mol. Biol., 247, 125–145,, 1995. 
Short summary
We report data on nuclear polarization formed in photoreaction of intramolecular electron transfer from adenine to flavin that was revealed several years ago by R. Kaptein by CIDNP. The question of whether one or two types of biradicals are formed stays unresolved. This work clarified the problem and confirmed that single common emissive maximum in magnetic field dependence of CIDNP may originate from single level crossing of short-lived biradical and that the FAD molecule has a compact shape.