Isoelectric Focusing and Separation of the Subcomponents of Lactoperoxidase.

Abstract
The existence of a pronounced heterogeneity of lactoperoxidase was confirmed by the method of isoelectric focusing of ampholxtes. Six subtractions were demonstrated and their specific activities and spectrophotometric properties were investigated. The heterogeneity pattern obtained by isoelectric focusing was compared to the results obtained by moving boundary electrophoresis, disc electrophoresis on polyacrylamide, and sedimentation analysis. An explanation of the heterogeneity has been suggested.