Fusionproteinaminoacids42-361(extracellularN-terminus)ofratNR1 (alsoknownasN-methyl-D-aspartatereceptorsubunitNR1,NMDAR1,NMD-R1,GRIN1,Glutamatereceptorsubunitzeta-1andGlurz1,accessionnumberP35439) Mouse:99%identity(319/320aminoacidsidentical) Human:99%identity(317/320aminoacidsidentical) <50% identity with other Glutamate receptors