Pb 2+ , Zn 2+ and Hg 2+ inactivated AGP, but Ca 2+ and Mg 2+ did not increase its activity.

• 该蛋白酶最适反应温度为50℃，最适作用pH为9?0。 Pb2＋、Zn2＋和Hg2＋能抑制其活性。