Substrates | Mutants | Km (µM) | kcat (s−1) | kcat/Km (× 106 M−1 s−1) | Specific activity (nmol mg−1 min−1) | Relative activity (%) |
---|---|---|---|---|---|---|
AD | WT | 47.43 ± 1.9 | 61.25 ± 2.1 | 1.29 | 59811 ± 823 | 100.00 ± 2.5 |
W299A | 34.89 ± 2.5 | 114.33 ± 5.1 | 3.28 | 112588 ± 1021 | 188.24 ± 3.8 | |
W299G | 37.01 ± 1.8 | 101.24 ± 0.9 | 2.74 | 97618 ± 689 | 163.21 ± 3.2 | |
Testosterone | WT | 42.05 ± 4.3 | 79.50 ± 5.4 | 1.89 | 74648 ± 1427 | 124.81 ± 7.6 |
W299A | 33.25 ± 4.2 | 122.91 ± 3.9 | 3.70 | 118119 ± 1134 | 197.49 ± 4.2 | |
W299G | 38.89 ± 2.9 | 92.88 ± 7.1 | 2.39 | 91506 ± 1341 | 152.99 ± 2.7 | |
17-MT | WT | 55.35 ± 3.1 | 56.94 ± 5.2 | 1.03 | 49929 ± 1538 | 83.48 ± 4.2 |
W299A | 44.63 ± 2.8 | 74.15 ± 1.8 | 1.66 | 69278 ± 838 | 115.83 ± 3.3 | |
W299G | 52.18 ± 3.6 | 58.08 ± 2.7 | 1.11 | 54469 ± 790 | 91.07 ± 3.3 | |
Cortisone | WT | 50.04 ± 2.7 | 59.68 ± 4.7 | 1.19 | 56892 ± 899 | 95.12 ± 3.5 |
W299A | 42.85 ± 3.3 | 78.05 ± 9.2 | 1.82 | 73209 ± 1382 | 122.40 ± 2.9 | |
W299G | 47.91 ± 2.1 | 60.73 ± 3.6 | 1.27 | 59446 ± 968 | 99.39 ± 3.4 | |
CA | WT | 95.08 ± 4.7 | 45.27 ± 3.5 | 0.48 | 31776 ± 740 | 53.13 ± 5.8 |
W299A | 75.93 ± 3.8 | 47.32 ± 1.5 | 0.62 | 37555 ± 1185 | 62.79 ± 3.5 | |
W299G | 146.28 ± 5.6 | 39.18 ± 1.8 | 0.27 | 24294 ± 693 | 40.62 ± 2.3 | |
11α-OH-P | WT | 228.26 ± 7.1 | 19.20 ± 4.5 | 0.08 | 11660 ± 562 | 19.49 ± 3.5 |
W299A | 149.15 ± 4.6 | 33.59 ± 2.1 | 0.23 | 24041 ± 347 | 40.19 ± 6.4 | |
W299G | 171.65 ± 3.9 | 26.05 ± 0.7 | 0.15 | 16799 ± 197 | 28.09 ± 4.2 | |
9α-OH-AD | WT | 145.11 ± 4.4 | 40.56 ± 4.6 | 0.28 | 24385 ± 361 | 40.77 ± 3.2 |
W299A | 68.49 ± 7.0 | 51.76 ± 3.3 | 0.76 | 41874 ± 712 | 70.01 ± 3.4 | |
W299G | 107.03 ± 5.1 | 43.11 ± 5.4 | 0.40 | 30598 ± 294 | 51.16 ± 2.3 | |
21-DC | WT | 57.12 ± 2.8 | 55.18 ± 3.7 | 0.97 | 46677 ± 649 | 78.04 ± 2.5 |
W299A | 46.85 ± 0.9 | 62.06 ± 6.1 | 1.32 | 61375 ± 871 | 102.61 ± 5.2 | |
W299G | 54.91 ± 3.6 | 57.71 ± 8.9 | 1.05 | 52702 ± 610 | 88.11 ± 3.9 | |
Progesterone | WT | 62.31 ± 4.8 | 53.47 ± 4.1 | 0.86 | 45022 ± 429 | 75.27 ± 2.9 |
W299A | 40.37 ± 3.7 | 87.12 ± 4.2 | 2.16 | 87199 ± 192 | 145.79 ± 3.8 | |
W299G | 43.19 ± 2.8 | 74.82 ± 1.4 | 1.73 | 70217 ± 314 | 117.40 ± 2.2 |