1M5B:
reference: Structural basis for AMPA receptor activation and ligand selectivity: crystal structures of five agonist complexes with the GluR2 ligand-binding core., Hogner A, Kastrup JS, Jin R, Liljefors T, Mayer ML, Egebjerg J, Larsen IK, Gouaux E, J Mol Biol 2002 Sep 6;322(1):93-109. PMID: 12215417

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