Probing the Binding of Valacyclovir Hydrochloride to the Human Serum Albumin

Mohammad-Aghaie, Delara; Soltani Rad, Navid; Yousefi, Reza; Parvizi, Negar; Behrouz, Somayeh; Alavianmehr, Mohamad Mehdi

doi:10.22036/pcr.2019.183986.1628

Probing the Binding of Valacyclovir Hydrochloride to the Human Serum Albumin

Document Type : Regular Article

Authors

Delara Mohammad-Aghaie ¹

Navid Soltani Rad ²

Reza Yousefi ³

Negar Parvizi ⁴

Somayeh Behrouz ²

Mohamad Mehdi Alavianmehr ⁵

¹ Department of Chemistry, Shiraz University of Technology, Shiraz, 71555-313, Iran

² Department of Chemistry, Shiraz University of Technology, Shiraz 71555-313, Iran

³ Protein Chemistry Laboratory, Department of Biology, Shiraz University, Shiraz 71454, Iran

⁴ Department of Chemistry, Shiraz University of Technology, Shiraz, 71555-313

⁵ 1Department of Chemistry, Shiraz University of Technology, Shiraz 71555-313, Iran

https://doi.org/10.22036/pcr.2019.183986.1628

Abstract

UV-visible and Fluorescence spectroscopic methods were employed to study the interaction of human serum albumin (HSA) with Valacyclovir Hydrochloride. Additionally, molecular dynamics and molecular docking simulations were used to visualize and specify the binding site of Valacyclovir Hydrochloride. The Stern-Volmer and van't Hoff equations along with spectroscopic observations, were used to determine the binding and thermodynamic parameters. Overall obtained results revealed the presence of dynamic type of quenching mechanism in binding of Valacyclovir Hydrochloride to HSA, while the interaction was found to be entropy driven at domain III of HSA. Analyzing the protein ligand interactions with LIGPLOT, confirmed the dominance of hydrophobic interactions, while the hydrogen bonding interactions play the minor role.

Graphical Abstract