Insert components and commonly used nomenclature for the eight NMDAR1 splice variants.

The subscript (1) of NR1 indicates the presence, and (0) the absence, in left to right positions, corresponding to the three alternatively spliced axons in the 5′ to 3′ direction, N1, C1 and C2. The N1, C1 and C2 probes detect the presence of each of the three cassettes, and the NR1-4 probe detects the absence of both C1 and C2 cassettes; (a) Durand et al.[23]; (b) Hollmann et al.[80]; (c) Sugihara et al.[81]; and (d) Nakanishi et al.[82]; Table adapted from Zukin and Bennett [54].