Analysis of Rat Caseins by High Performance Liquid Chromatography

Abstract
The analysis of rat caseins by high performance liquid chromatography is described. These procedures have confirmed the structural similarity of the polypeptide chains of native and dephosphorylated rat β- and β-caseins as well as to demonstrate that these two related proteins are structurally unrelated to the rat α1-casein protein. In addition, these HPLC techniques allow the analysis of the phosphorylation patterns of these rat caseins following digestion with potato acid phosphatase (E.C. 3.1.3.2).