3.4.21.78 7.5 - assay at 753077 3.4.21.78 7.5 8.5 D-Pro-Phe-Arg 4-nitroanilide, mouse enzyme 29737 3.4.21.78 8 - Gly-Pro-Arg 4-methylcoumarin 7-amide, human enzyme 29737 3.4.21.78 8 8.5 D-Pro-Phe-Arg 4-nitroanilide 29736 3.4.21.78 11 - tosyl-Gly-Pro-Arg 4-nitroanilide, human enzyme 29737