Association of Mixtures of the Two Major Forms of β-Casein from Human Milk

摘要

Human milk β-casein (CN) is unique in that it may be phosphorylated at any level from zero (β-CN-0P) to five (β-CN-5P) organic phosphates per molecule. The 2P and 4P forms are the major components, with about 30 to 35/100 each. Here, we present the association proper - ties of mixtures of these two moieties of human β-CN The aggregation patterns, as functions of temperature And ionic strength of these mixtures, generally follow Those for the individual components. However, the mix - Tures yielded polymers with slightly different proper - Ties, which indicates extensive interaction between the Two.