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Título: | Fluorescent-tagged sp2-iminosugars with potent β-glucosidase inhibitory activity |
Autor: | Aguilar Moncayo, Matilde; García Moreno, María Isabel; Stütz, Arnold E.; García Fernández, José Manuel CSIC ORCID; Wrodnigg, Tanja M.; Ortiz-Mellet, Carmen | Palabras clave: | Glycosidase inhibitors Fluorescence resonance energy transfer FRET Iminosugars Photolabeling |
Fecha de publicación: | 1-oct-2010 | Editor: | Elsevier | Citación: | Bioorganic and Medicinal Chemistry Letters 18(21): 7439-7445 (2010) | Resumen: | New fluorescently-labelled sp2-iminosugars based on the 5N,6S-[N′-(4-aminobutyl)iminomethylidene]-6-thionojirimycin skeleton have been synthesized as photoprobes to monitor glycosidase binding. Dansyl, dapoxyl and coumarin fluorophores were appended to the terminal amino group at the N′-substituent by either sulfonamide or amide bridging reaction. All the conjugates behaved as strong (low micromolar to nanomolar) and selective inhibitors of β-glucosidases (almonds and bovine liver) and naringinase, in agreement with the inhibition pattern previously encountered for related iso(thio)urea-type bicyclic sp2-iminosugars. The presence of the fluorescent probe allows real-time and continuous monitoring of β-glucosidase inhibition by fluorescence resonance energy transfer (FRET), taking advantage of the intrinsic tryptophan-associated fluorescence of the protein. | Descripción: | 7 páginas, 3 figuras, 1 tabla | Versión del editor: | http://dx.doi.org/10.1016/j.bmc.2010.09.003 | URI: | http://hdl.handle.net/10261/36183 | DOI: | 10.1016/j.bmc.2010.09.003 | ISSN: | 0960-894X |
Aparece en las colecciones: | (IIQ) Artículos |
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