Table 2. Comparison of GST-Rab7 and GST-RhoA binding to BODIPY-GTP analogs.
Experiments carried out in 1 mM MgCl2 buffer
| GTPase | GST-Rab7 | GST-RhoA | ||
|---|---|---|---|---|
| Nucleotide | BODIPY FL | BODIPY FL | BODIPY FL | BODIPY FL |
| GTP | GTP-γ-NH | GTP | GTP-γ-NH | |
| 1Bmax (103 BODIPY/bead) | 650 ± 10 | 60 ± 5 | 700 ± 20 | 710 ± 15 |
| 2Kd (nM) | 20 ± 5 | 70 ± 20 | 80 ± 10 | 95 ± 10 |
Calculated as described in Table 1