Chromatographic Separation of Peptides on Ion Exchange Resins. Separation of Peptides from Enzymatic Hydrolyzates of the α,β, and γ Chains of Human Hemoglobins.

Isolation of components in a mixture is most effectively accomplished by great alteration of conditions from step to step in the separation. This principle has been applied to the separation of complex mixtures of peptides in protein hydrolyzates. Excellent results have been obtained by chromatographing first on the cation exchanger Dowex-50 and then rechromatographing on the anion exchanger Dowex-1. Volatile developers were employed throughout. Experimental procedures are presented, and results are given of their application to the separation of peptides from human hemoglobins A and F.