TABLE 1.
Protein | MtFadD32 | MmFadD32 | MsFadD32 | CgFadD32 |
Identity (%) | 100 | 92 | 74 | 39 |
Specific activity (nmol·min−1·mg−1) | 5.37 ± 0.16 | 3.85 ± 0.12 | 39.91 ± 0.73 | 0.46 ± 0.03 |
Kinetic parameters | ||||
ATP | ||||
Km (μm) | 248 ± 27 | 902 ± 114 | 112 ± 12 | |
Vmax (μm·min−1) | 0.14 ± 0.01 | 0.29 ± 0.01 | 0.17 ± 0.01 | |
kcat (min−1) | 0.35 ± 0.01 | 0.72 ± 0.03 | 4.33 ± 0.01 | |
kcat/Km (min−1·μm−1) | 0.0014 ± 0.0003 | 0.0008 ± 0.0003 | 0.0387 ± 0.0063 | |
Lauric acid (C12) | ||||
Km (μm) | 72.09 ± 5.75 | 103.2 ± 13.94 | 25.9 ± 1.6a | |
Vmax (μm.min−1) | 0.82 ± 0.03 | 0.60 ± 0.39 | 0.45 ± 0.01 | |
kcat (min−1) | 2.04 ± 0.07 | 1.51 ± 0.09 | 11.29 ± 0.22 | |
kcat/Km (min−1·μm−1) | 0.028 ± 0.012 | 0.015 ± 0.007 | 0.438 ± 0.139 | |
Myristic acid (C14) | ||||
Km (μm) | 4.77 ± 0.65 | 5.76 ± 0.56 | 5.2 ± 0.5a | |
Vmax (μm.min−1) | 0.39 ± 0.01 | 0.27 ± 0.01 | 0.17 ± 0.01 | |
kcat (min−1) | 0.98 ± 0.03 | 0.69 ± 0.01 | 4.18 ± 0.09 | |
kcat/Km (min−1·μm−1) | 0.206 ± 0.042 | 0.119 ± 0.025 | 0.800 ± 0.184 |
a Data are from Ref. 17.