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Probing the binding interaction of human serum albumin with three bioactive constituents of Eriobotrta japonica leaves: Spectroscopic and molecular modeling approaches



Probing the binding interaction of human serum albumin with three bioactive constituents of Eriobotrta japonica leaves: Spectroscopic and molecular modeling approaches



Journal of Photochemistry and Photobiology. B, Biology 148: 268-276



Corosolic acid (CRA), maslinic acid (MA), and tormentic acid (TA) are three kind of bioactive constituents of Eriobotrta japonica leaves. In this study, plasma protein binding model prediction suggested that the binding ability to HSA was CRA>MA>TA. Furthermore, fluorescence spectroscopy confirmed this prediction. The results from emission and time resolved fluorescence studies revealed that the emission quenching of HSA with CRA, MA, and TA were all initiated by static quenching mechanism. From molecular docking results and site marker competitive experimental results it was possible to make good estimates about CRA, MA, and TA mainly bound to subdomain IIA of HSA. 3D fluorescence, FT-IR and CD spectra indicated that the local conformation of HSA molecules was affected by the presence of CRA, MA, and TA, but at different extents.

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Accession: 058629107

Download citation: RISBibTeXText

PMID: 25985147

DOI: 10.1016/j.jphotobiol.2015.04.030


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