Fig. 3. Typical currents evoked by 100 μM N -methyl-D-aspartate at different concentrations of glycine for (A ) wild-type GluN1/2A, (B ) GluN1(W731A)/2A, (C ) GluN1(F758A)/2A, (D ) GluN1(F758L)/2A, (E ) GluN1(F758W)/2A, and (F ) GluN1(F758Y)/2A receptors.