AGS audiogenic seizures AGS-RA audiogenic seizures followed by respiratory arrest G guanine GoF gain of function M2 transmembrane domain 2 N asparagine P postnatal day P-loops phosphate-binding loops RA respiratory arrest S serine V vehicle WR wild running 1 INTRODUCTION The N-methyl-D-aspartate receptor (NMDAR) is a tetrameric ionotropic channel containing two copies of the essential subunit GluN1 and two accessory subunits from either the GluN2(A-D) or the GluN3(A-B) family of GRIN genes...