3.4.21.9 37 - loss of 30% of activity after 4 days 716743 3.4.21.9 60 - complete destruction of activity towards trypsinogen after 2 min, 60% loss of esterase activity after 8 min. Presence of 4 mM CaCl2 stabilizes both activities 95572 3.4.21.9 60 - purified recombinant enteropeptidase light chain wild-type and N6D/G21D/G22D/N141D/K209E mutant enteropeptidase light chains show 60% remaining activity 718352 3.4.21.9 65 - purified recombinant enteropeptidase light chain wild-type and mutant C112S show 10% remaining activity, the purified recombinant N6D/G21D/G22D/N141D/K209E mutant enteropeptidase light chain shows 20% activity remaining 718352 3.4.21.9 70 - purified recombinant enteropeptidase light chain wild-type and mutant C112S are inactivated, purified recombinant N6D/G21D/G22D/N141D/K209E mutant enteropeptidase light chain shows 20% activity remaining 718352