Table 3.
Subunit | EC50 | Hill slope | Imax (nA) |
---|---|---|---|
α3 (n = 6) | 837.1 ± 40 | 1.57 ± 0.27 | 7,715 ± 460 |
α3P185L (n = 7) | 59.03 ± 7*** | 0.59 ± 0.47** | 6,814 ± 750 |
Glycine concentration–response curves were generated for α3-WT and mutant P185L GlyRs. Introduction of the P185L mutation, which corresponds to RNA editing that occurs in vivo, produced a leftward shift in the concentration–response curve significantly reducing the glycine EC50, t(8) = 14.29, p < 0.0001, and the Hill slope, t(11) = 3.86, p = 0.003. However, the mutation had no significant effect on the maximal glycine-activated currents, t(11) = 0.98, p = 0.4.
p < 0.0001,
p < 0.01.