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Peptide nucleic acid scaffolds represent a promising tool to interrogate the multivalent effects of ligand binding to a membrane receptor. Dopamine D2 receptors (D2R) are a class of G-protein coupled receptors (GPCRs), and the formation of higher-ordered structures of these receptors has been associated with the progression of several neurological diseases. In this Letter, we describe the synthesis of a library of ligand-modified PNAs bearing a known D2R agonist, (±)-PPHT. The D2R activity for each construct was assessed, and the multivalent effects were evaluated.

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