Formation of<scp>l</scp>-Glutamic Acid fromγ-Aminobutyric Acid by Plant Enzyme

In the course of studies concerning the reverse action of l-glutamic acid decarboxylase, the authors have asserted the inhibition of α-ketoglutaric acid and the presence of l-glutamic acid and γ-aminobutyric acid in the enzyme preparations. Finally, evidence for the interconversion of α-ketoglutaric-γ-aminobutyric transaminase and l-glutamic acid decarboxylase preparations isolated from plant tissue was established in our laboratory.