Abstract
NADP-dependent malic enzyme from grape berries is associated with NAD-dependent malate dehydrogenase. A two step procedure, involving affinity chromatography on 2′,5′-ADP-Sepharose 4B, followed by gel- permeation on Bio-Gel A- 1.5 m, was used to separate malic enzyme from malate dehydrogenase and other proteins. The yield was ca 60% Malic enzyme and malate dehydrogenase migrated respectively as three bands and one band during disc electrophoresis in polyacrylamide gel. The MW resulting from gel-permeation was 220 000 for malic enzyme and 53 000 for malate dehydrogenase.
Published Version
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