In the circulatory system, serum albumin (SA) is an important transporter of the majority of molecules with
biological activity. We focused the current study on the anti-inflammatory compound, o-alkylselenenylated benzoic acid
(ALKSEBEA), to determine its ability to access SA. Herein, we employed experimental procedures (fluorescence studies,
Raman spectroscopy) and docking study on SA obtained from the Protein Data Bank and key conformers obtained from
molecular dynamics simulations. The results show that ALKSEBEA accesses SA using a cooperative behavior according
to fluorescence studies. In addition, the Raman results indicate that the ligand binding affects the backbone constituents.
These results were confirmed by docking simulations tested on several SA conformers, which showed that ALKSEBEA
bound on several sites on SA via π-π or π-cation interactions and that the ligand reaches other binding sites, where aromatic
and basic residues as well as the backbone residues are involved.
Keywords: Serum albumin, selenium, fluorescence and Raman spectroscopy, molecular dynamics and docking simulations.
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