Abstract

Circular Dichroism (CD) is an absorption spectroscopy technique and measures left and right circularly polarized light difference of optical activity of asymmetric macromolecules. Unequal absorption of left and right circularly polarized light provides information about macromolecules depending on the spectral region. The far UV region provides data for secondary structure composition of proteins whereas near UV region provides data for tertiary structure of proteins. Furthermore, denaturation experiments provide stability parameters of proteins.