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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).