Abstract

The rate of glutamine utilization by isolated lymphocyte mitochondria is 21.4 nmol/min per mg protein, of which 72% is converted to glutamate. Addition of ATP, ADP or AMP increased the rate of glutamine utilization by 60%. Evidence is presented that this is due to a stimulation of oxoglutarate dehydrogenase activity by ADP: this may account for the stimulation of glutamine utilization by concanavalin A in lymphocyte.

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