Probable Identification of γ, TS-, R- and S-Caseins as Fragments of β-Casein

Abstract

From the results of anfino acid analysis. molecular weight determinations, peptide mapping, and end-group analysis, it was believed that bovine T-, TS-, R-and Scaseins might be pieees of different sizes of the B-casein molecule. Determination of the sequence of the first 10 to 15 amino acid residues at the ~-terminal part of these proteins by a sequencer lends eredenee to the hypothesis because the sequences fit, at appropriate locations, the partial amino acid sequence of B-casein worked out by Ribadeau Dumas, Grosclaude and Mercier.