Extended Data Table 7 |. Functional data (Gi/o GloSensor) for mutants of the lateral channel.
Data were acquired with MT1 wild-type (WT) and mutants by using GloSensor to measure Gi/o-mediated cAMP inhibition via isoproterenol stimulation. Data represent means of EC50 (number of independent experiments in square brackets), represented as mean(pEC50) ± s.e.m. as well as EMAX shown as mean(%EMAX) ± s.e.m. %EMAX is relative to wild-type receptor in columns, and (%EMAX*) is relative to melatonin activity in rows. Mutant effects were calculated by the change in relative activity, or log(EMAX /EC50) subtracting wild-type from mutant. ND, not determined. Dose-response curves are shown in Supplementary Figure 6.
melatonin | ramelteon | bitopic ligand CTL 01-05-B-A05 |
|||||||
---|---|---|---|---|---|---|---|---|---|
WT | 0.0045 [23] (11.34±0.07) |
100 (100) |
0 | 0.0035 [12] (11.45±0.15) |
100 (98±2) |
0 | 0.69 [4] (9.16±0.09) |
100 (124±3) |
0 |
A158M (4.56) |
no activity | ND | |||||||
A190F (5.41) |
0.0141 [9] (10.85±0.20) |
110±4 (100) |
−0.45 | 0.0084 [6] (11.07±0.43) |
119±7 (106±6) |
−0.31 | 5.75 [4] (8.24±0.13) |
107±3 (120±3) |
−0.89 |