537563 Grin1 Glutamate ionotropic receptor NMDA type subunit 1 3 537561 Grin1 generated sensory thalamus-specific NR1 1 537564 Grin1 GluN1 NMDA-R subunit 1 537560 Grin1 glutamate NMDA receptor subunit 1 1 537559 Grin1 glutamatergic neurochemicals, including NR1 1 537562 Grin1 glycine binding site of the NMDAR1 subunit 1