Abstract
Mimosine has shown antitumor activity towards cancer cells. It has also been found to inhibit deoxyribonucleic acid (DNA) but the interaction is not fully understood. Here we report the results of investigation of its interactions with bovine serum albumin (BSA) and DNA in aqueous solution (pH 7.4) using FTIR and UV spectroscopic methods. Mimosine was found to disrupt the conformation of BSA by reducing its α-helix component and promoting a partial unfolding of the protein. In addition, the results indicated that mimosine may bind to DNA by electrostatic attractions via phosphate groups and grooves. The overall binding constant of DNA –mimosine complex was 5 × 10 3 M−1.
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