Table 2.

K _M values for proteasome activities in the hemocytes of shrimps

Activity	Penaeus vannamei	Crangon crangon
Trypsin-like	0.072 ± 0.030	0.086 ± 0.009
Chymotrypsin-like	0.309 ± 0.383a	0.167 ± 0.105
Caspase-like	0.196 ± 0.079	0.295 ± 0.262

^aCalculated from the reaction velocity at substrate concentrations between 0 and 0.1 mmol L⁻¹