Abstract
To identify the interaction proteins for the alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionate (AMPA) receptor subunit glutamate receptor-interacting protein 1 (GRIP1), GRIP1 interactions with microtubule-associated protein (MAP)-1B light chain (LC) were investigated. GRIP1 interacts with MAP-1A and MAP-1B in the yeast two-hybrid assay, as is indicated also by glutathione S-transferase (GST) pull-down and coimmunoprecipitation with MAP-1B LC antibody in brain fractions. These results suggest a novel mechanism for localizing AMPA receptors to synaptic sites.
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