抄録
From observing the change in Mg++ content of pyloric caeca enzyme solution caused by dilution on the one hand and by Mg++ addition on the other, the following inference has been drawn about the participation of this ion in the formation of glycylglycine dipeptidase in active state:
1. GG dipeptidase of pyloric caeca is a metal protein that contains Mg.
2. Dilution of the enzyme solution advances the dissociation of the protein-Mg compound, namely, favors the reaction
protein-Mg ?? Mg (ion or salt) + protein to progress rightwards. When Mg++ is added, on the contrary, the reaction proceeds towards the left, resulting in an increase of active form of the enzyme.
