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Similarity between the structural models of muscimol and GABA

GABA and muscimol molecules can have similar 3D-conformations, as depicted in this image showing the two structural formulas nearly superimposed. Because of this, muscimol binds to certain GABA receptors. (Illustration by Keministi: Michelot D, Melendez-Howell LM. Amanita muscaria: chemistry, biology, toxicology, and ethnomycology. Mycol Res 2003;107(Pt 2):131-46. (Creative Commons CC0 1.0 Universal Public Domain dedication.)