Table 5. HTRF Binding Parameters of CB1R Probe 29 and Unlabeled Ligandsa.
compd. | kon (106 M–1 min–1) | koff (min–1) | RT (min) | kinetic KD (nM) | Ki (nM)b | Ki (nM)c |
---|---|---|---|---|---|---|
29 | 0.81 | 0.26 | 3.85 | 365 | ||
6 | 48.3b | 0.15b | 6.67 | 3.23 | 3.34 | 2.08 |
HU210 | 37.4b | 0.11b | 9.10 | 3.04 | 2.08 | 1.26 |
Data are presented as mean, N = 3.
Probe 29 (300 nM) used as a tracer.
Probe 28 (60 nM) used as a tracer. RT: residence time. All data with standard error of mean are given in the Supporting Information.