The Isolation and Properties of Some Soluble Proteins from Wool III. The Heterogeneity of the Low-Sulphur Wool Protein Scmka2

Abstract

The low-sulphur wool protein SCMKA2, which gives only single peaks on electrophoresis and ultracentrifugation over a wide range of pH and concentration, has been divided arbitrarily by ammonium sulphate precipitation into two fractions. Amino acid analysis has shown significant differences between the fractions in some amino acid residues, particularly of S-carboxymethyl cysteine, glycine, phenylalanine, tyrosine, and valine.