Abstract

Multiple molecular forms of glucose-6-phosphate dehydrogenase including aggregated ones were observed in rice plant suspension cultures by disc electrophoresis. By sucrose density gradient centrifugation, the enzyme was resolved into three components with the sedimentation coefficients of 42.5, 23 and 6, respectively. The first two components were dissociated into the third component in the presence of KC1, NADP+ and NADPH. These three components were interconvertible molecular species.

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