ID 3.4.21.121 DE Lys-Lys/Arg-Xaa endopeptidase. AN Aeromonas extracellular serine protease. CA Cleavage of -Lys-Lys-|-Xaa and -Lys-Arg-|-Xaa bonds. CC -!- The enzyme is a serine peptidase, which has been shown to cleave CC prothrombin and prekallikrein. CC -!- It hydrolyzes the complement component C5 releasing complement CC component C5a. DR Q9L5A4, ASP_AERSO ; //