3.4.21.B12 0.31 - purified recombinant enzyme, substrate H-D-Val-L-Leu-L-Lys-4-nitroanilide 647338 3.4.21.B12 0.67 - purified recombinant enzyme, substrate N-benzoyl-L-Ile-L-Glu-Gly-L-Arg-4-nitroanilide 647338 3.4.21.B12 1.12 - purified recombinant enzyme, substrate H-D-Pro-L-Phe-L-Arg-4-nitroanilide 647338 3.4.21.B12 1.42 - purified recombinant enzyme, substrate H-D-Val-Leu-Arg-4-nitroanilide 647338