緑膿菌
Serralysin (, "Pseudomonas aeruginosa alkaline proteinase", "Escherichia freundii proteinase", "Serratia marcescens extracellular proteinase", "Serratia marcescens metalloproteinase", "Pseudomonas aeruginosa alk. protease", "Serratia marcescens metalloprotease") is an enzyme. This enzyme catalyses the following chemical reaction