Table 5

Potency and intrinsic activity of ligands acting at the glycineB site of expressed NMDA receptor subtypes

LigandPotency (μM)References; species, NR1 splice variant
NR1/NR2ANR1/NR2BNR1/NR2CNR1/NR2D
Glycine1.20.16 Buller and Monaghan, 1997; NR1a
Glycine0.970.840.760.56 Matsui et al., 1995; mouse
Glycine1.91.4 Hesset al., 1996; human, NR1a
Glycine2.10.30.2 Kutsuwada et al.,1992; mouse
Glycine0.840.190.150.096 Woodwardet al., 1995a,b; rat, NR1a
Glycine0.53  (100%)5-a 0.06  (100%) Priestley et al., 1995; human, NR1a
Glycine3.72.10.362.3 Laurie and Seeburg, 1994a; binding
d-Serine0.32  (88%)0.26  (102%)0.21  (118%)0.17  (100%) Matsui et al., 1995; mouse
d-Serine2.20.6 Hess et al., 1996; human, NR1a
d-Serine0.22  (99%)0.15  (113%) Priestley et al., 1995; human, NR1a
d-Serine0.79  (100%)0.72  (100%)1.24  (110%)0.75  (100%) Krueger et al., 1997; human, NR1a
ACPC0.6  (100%)0.3  (100%)3.2  (150%)0.08  (110%) Krueger et al., 1997; mouse
d-Cycloserine15.2  (20%)8.4  (20%)1.6  (120%)2  (100%) Kruegeret al., 1997; mouse
d-Cycloserine3.2  (93%)1.3  (88%) Priestley et al., 1995; human, NR1a
R(+)HA-966121  (12%)4.6  (14%) Priestley et al., 1995; human, NR1a
ACBC45  (13%)6.6  (33%) Priestley et al., 1995; human, NR1a
7-Cl-KYN0.63  (0%)0.2  (0%) Priestley et al., 1995; human, NR1a
5,7-diCl-KYN (K d)0.059  (0%)0.097  (0%)0.058  (0%)0.113  (0%) Laurie and Seeburg, 1994a; binding, rat
ACEA 1011 (K b)0.330.460.210.74 Woodwardet al., 1995a; rat, NR1a
ACEA 1021 (K b)0.00280.00590.00190.011 Woodwardet al., 1995a; rat, NR1a
GV 156526A0.05  (0%)0.07  (0%) Bunnermann et al., 1996; HEK cells
L-687,4144.0  (5%)1.1  (3%) Priestley et al., 1995; human, NR1a
L-701,3240.005  (0%)0.005  (0%) Priestleyet al., 1995; human, NR1a
  • Data refer to electrophysiological studies unless stated otherwise. The species of mRNA and the type of NR1 splice variant are also shown.

  • 5-a Values in parentheses are intrinsic activities (with respect to glycine).