EFFECTS OF SALICYLATE ON GLUTAMATE DEHYDROGENASE AND GLUTAMATE DECARBOXYLASE

Abstract
Salicylate inhibits glutamate-de-hydrogenase and glutamate-decarboxylase activities in vitro. The inhibition of glutamate dehydrogenase is reversible but does not involve competition with either glutamate or NAD; the inhibition of glutamate decarboxylase is irreversible. Preincubation of glutamate decarboxylase with pyridoxal phosphate reduces the degree of inhibition by salicylate.