Data for β-lactoglobulin conformational analysis after (-)-epigallocatechin gallate and metal ions binding.

This data article contains complementary results related to the paper "Effect of metal ions on the binding reaction of (-)-epigallocatechin gallate to -lactoglobulin" (Zhang et al., 2017) [1]. Data was obtained by circular dichroism (CD) spectroscopy to investigate potential -lactoglobulin (-Lg) conformational changes with different concentrations of EGCg and Cu or Al added to -Lg. 500 µL of the 25 µM -Lg solution containing EGCg (25 µM) or metal ions (0-500 µM) were measured, and the spectra were recorded. CD spectroscopy data present in this article indicated that the -Lg-Cu, -Lg-Al and -Lg-EGCg interaction resulted in unfolding of the secondary structure of -Lg.