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Proceedings Paper

Dynamical and structural properties of flavin adenine dinucleotide in aqueous solutions
Author(s): Ines Delfino; Rosario Esposito; Marianna Portaccio; Maria Lepore
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Paper Abstract

Optical properties of flavin adenine dinucleotide (FAD) moiety are nowadays widely used for biotechnological applications. Given the fundamental role played by FAD, having additional information about this complex can be extremely useful to get a deeper insight in structural properties and functional role of this enzymatic co-factor. For this purpose, we investigated FAD behaviour in aqueous solutions at two pH values by means of complementary optical spectroscopic techniques (circular dichroism, infrared spectroscopy and time-resolved fluorescence). The results confirm that pH influences circular dichroism spectra. An innovative Maximum Entropy Method was adopted for time-resolved fluorescence signal analysis allowing us to evidence a three-components decay for FAD in aqueous solution with pH-depending lifetimes and relative amplitudes. All the results here reported give a more complete view of FAD’s properties that can be exploited in designing new biotechnological devices.

Paper Details

Date Published: 17 May 2018
PDF: 10 pages
Proc. SPIE 10685, Biophotonics: Photonic Solutions for Better Health Care VI, 106854N (17 May 2018); doi: 10.1117/12.2306990
Show Author Affiliations
Ines Delfino, Univ. degli Studi della Tuscia (Italy)
Rosario Esposito, Univ. degli Studi di Napoli Federico II (Italy)
Marianna Portaccio, Univ. degli Studi della Campania Luigi Vanvitelli (Italy)
Maria Lepore, Univ. degli Studi della Campania Luigi Vanvitelli (Italy)


Published in SPIE Proceedings Vol. 10685:
Biophotonics: Photonic Solutions for Better Health Care VI
Jürgen Popp; Valery V. Tuchin; Francesco Saverio Pavone, Editor(s)

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