ID 3.4.21.3 DE Metridin. AN Metridium proteinase A. AN Sea anemone protease A. CA Preferential cleavage: Tyr-|-Xaa, Phe-|-Xaa, Leu-|-Xaa; little action on CA Trp-|-Xaa. CC -!- Digestive enzyme from the sea anemone Metridium senile. //