Table 2.
Values for the parameters describing Tim protein binding to PS-containing vesicles
| Binding parameter | Tim1 | Tim3 | Tim4 |
|---|---|---|---|
| Hill coefficient, | 1.38 (1.2, 1.57)∗ | 1.65 (1.59, 1.72) | 2.28 (2.17, 2.39)∗ |
| for Tim-Ca2+-PS dissociation, μM | 61 (59, 63) | 127 (120, 136) | 35 (34, 36) |
| for Tim-Ca2+ dissociation, μM | 590 (540, 650) | 4300 (3600, 5200) | 136 (123, 150) |
| for Tim-PS dissociation, μM | 1800 (1300, 2700) | >5000 | 239 (220, 258) |
Values for Tim3 were obtained by fitting the data in Fig. 4, b and c to Eq. S4. Values for Tim1 and Tim4 were obtained by fitting the data in Figs. S3 and S4 to Eq. 2, utilizing -values recalculated from the primary data for Figure 5 of Tietjen et al. (14). Brackets give 95% confidence intervals. The values for each parameter are significantly different for the three Tim proteins at >95% confidence as calculated using a z test.
The previously obtained values for the Hill coefficients of Tim1 and Tim4 were recalculated after reanalysis of the primary data using the updated data analysis methodology of this work; see Supporting materials and methods.