Cooperative modulation of [3H]MK-801 binding to the N-methyl-D-aspartate receptor-ion channel complex by L-glutamate, glycine, and polyamines.


In extensively washed rat cortical membranes [3H](+)-5-methyl-10,11-dihydro-5 H-dibenzo [a,d]cyclohepten-5,10-imine ([3H]MK-801) labeled a homogeneous set of sites (Bmax = 1.86 pmol/mg protein) with relatively low affinity (KD = 45 nM). L-Glutamate, glycine, and spermidine produced concentration-dependent increases in specific [3H]MK-801 binding due to a… (More)


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