Table 1.
Michaelis–Menten analyses for hinokitiol and Fe
| Concentration constant | Concentration varied | Vmax | Km |
|---|---|---|---|
| 500 nM hinokitiol | Fe2+ | 2.2 ± 0.1 | 448 ± 66 |
| 1000 nM hinokitiol | Fe2+ | 4.3 ± 0.2 | 455 ± 86 |
| 500 nM hinokitiol | Fe3+ | 24.1 ± 3.3 | 1790 ± 500 |
| 1000 nM hinokitiol | Fe3+ | 87 ± 8 | 3010 ± 510 |
| 200 nM Fe2+ | Hinokitiol | 5.8 ± 1.2 | 6000 ± 2400 |
| 500 nM Fe2+ | Hinokitiol | 15.7 ± 5.4 | 13,200 ± 7000 |
| 200 nM Fe3+ | Hinokitiol | 6.2 ± 1.1 | 1620 ± 848 |
| 500 nM Fe3+ | Hinokitiol | 10.1 ± 0.6 | 545 ± 117 |
Data for 1000 nM hinokitiol resulted from fitting the data in Fig. 4 as described in its legend. Remaining rows came from similar analyses (not shown) with the concentration of hinokitiol unvaried in each of the top four rows while that for iron was unvaried in each of the last four rows. Vmax units are nEq/L min; km units are nEq/L