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An Updated Structure of Oxybutynin Hydrochloride.
Lin, Jieye; Bu, Guanhong; Unge, Johan; Gonen, Tamir.
Afiliación
  • Lin J; Department of Biological Chemistry, University of California, 615 Charles E. Young Drive South, Los Angeles, CA, 90095, USA.
  • Bu G; Department of Biological Chemistry, University of California, 615 Charles E. Young Drive South, Los Angeles, CA, 90095, USA.
  • Unge J; Department of Chemistry, Umeå University, Umeå, 901 87, Sweden.
  • Gonen T; Department of Biological Chemistry, University of California, 615 Charles E. Young Drive South, Los Angeles, CA, 90095, USA.
Adv Sci (Weinh) ; 11(40): e2406494, 2024 Oct.
Article en En | MEDLINE | ID: mdl-39225443
ABSTRACT
Oxybutynin (Ditropan), a widely distributed muscarinic antagonist for treating the overactive bladder, has been awaiting a definitive crystal structure for ≈50 years due to the sample and technique limitations. Past reports used powder X-ray diffraction (PXRD) to shed light on the possible packing of the molecule however their model showed some inconsistencies when compared with the 2D chemical structure. These are largely attributed to X-ray-induced photoreduction. Here microcrystal electron diffraction (MicroED) is used to successfully unveil the experimental 3D structure of oxybutynin hydrochloride showing marked improvement over the reported PXRD structure. Using the improved model, molecular docking is applied to investigate the binding mechanism between M3 muscarinic receptor (M3R) and (R)-oxybutynin, revealing essential contacts/residues and conformational changes within the protein pocket. A possible universal conformation is proposed for M3R antagonists, which is valuable for future drug development and optimization. This study underscores the immense potential of MicroED as a complementary technique for elucidating unknown pharmaceutical structures, as well as for protein-drug interactions.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Antagonistas Muscarínicos / Simulación del Acoplamiento Molecular / Ácidos Mandélicos Idioma: En Revista: Adv Sci (Weinh) Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Antagonistas Muscarínicos / Simulación del Acoplamiento Molecular / Ácidos Mandélicos Idioma: En Revista: Adv Sci (Weinh) Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Alemania