Table 2. Kinetic parameters for hydrolysis of peptidyl-NHMec substrates by recombinant F. hepatica cathepsin Ls.
Enzyme | Substrate | KM µM | ± | Kcat s−1 | ± | Kcat/KM Ms−1 |
FhCL1 | Z-LR-NHMec | 1.09 | 0.38 | 1.63 | 0.1 | 1492354.7 |
FhCL2 | Z-LR-NHMec | 2.13 | 0.29 | 0.95 | 0.035 | 444106.1 |
FhCL3 | Z-LR-NHMec | 48 | 5.7 | 1.2 | 0.05 | 25000 |
FhCL1 | Z-FR-NHMec | 1.9 | 0.57 | 0.12 | 0.008 | 64912.3 |
FhCL2 | Z-FR-NHMec | 7.8 | 1.5 | 0.09 | 0.008 | 11088 |
FhCL3 | Z-FR-NHMec | 20.05 | 2.9 | 0.02 | 0.001 | 999.3 |
FhCL1 | Boc-VLK-NHMec | 2.5 | 0.6 | 0.14 | 0.007 | 54266.7 |
FhCL2 | Boc-VLK-NHMec | 2.2 | 0.79 | 0.07 | 0.005 | 30712.5 |
FhCL3 | Boc-VLK-NHMec | 6.13 | 1.6 | 0.01 | 0.001 | 1747.8 |
FhCL1 | Z-VVR-NHMec | 2.84 | 0.7 | 0.021 | 0.001 | 7464.8 |
FhCL2 | Z-VVR-NHMec | 1.53 | 0.29 | 0.014 | 0.001 | 9237.5 |
FhCL3 | Z-VVR-NHMec | 11.7 | 2.1 | 0.043 | 0.020 | 3696.6 |
FhCL1 | Tos-GPR-NHMec | 27.2 | 4.9 | 0.02 | 0.001 | 671.6 |
FhCL2 | Tos-GPR-NHMec | 13.9 | 3.2 | 0.26 | 0.02 | 18559.5 |
FhCL3 | Tos-GPR-NHMec | 10.6 | 2.3 | 1.015 | 0.08 | 95774.7 |
FhCL1 | Tos-GPK-NHMec | 17.42 | 2.6 | 0.01 | 0.001 | 612.3 |
FhCL2 | Tos-GPK-NHMec | 12.9 | 3.4 | 0.18 | 0.013 | 13746.8 |
FhCL3 | Tos-GPK-NHMec | 9.8 | 3.7 | 0.15 | 0.015 | 36419.8 |
FhCL1 | Boc-VPR-NHMec | 22 | 2.5 | 0.01 | 0.0004 | 478.8 |
FhCL2 | Boc-VPR-NHMec | 11.39 | 2.1 | 0.23 | 0.01 | 20193.2 |
FhCL3 | Boc-VPR-NHMec | 21.1 | 3.2 | 0.033 | 0.002 | 1564 |
FhCL1 | Boc-AGPR-NHMec | 18.8 | 4 | 0.01 | 0.001 | 673.8 |
FhCL2 | Boc-AGPR-NHMec | 9.4 | 1.3 | 0.55 | 0.023 | 58027.1 |
FhCL3 | Boc-AGPR-NHMec | 9.6 | 1.6 | 0.58 | 0.025 | 60763.9 |