Glutamic acid dehydrogenase from germinating seeds

Abstract

LITTLE definite knowledge exists as to the mechanism of oxidative deamination in plants. That such deamination does occur is to be inferred both from the values of the respiratory quotients of certain germinating seeds As the amount of aspara- gine found is usually far in excess of what can be accounted for on the basis of the aspartic acid content of the seed proteins and, further, as the increase in asparagine is concomitant with the disappearance of other amino-acids [Schulze, 1898; 1901] there can be no doubt that its formation takes place at the expense of the latter. It is generally assumed that the ammonia formed by oxidative