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Título: | Fluorinated carbohydrates as lectin ligands: simultaneous screening of a monosaccharide library and chemical mapping by 19F NMR spectroscopy |
Autor: | Martínez, J. Daniel; Manzano, Ana I. CSIC; Calviño, Eva CSIC ORCID ; Diego, Ana de CSIC ORCID ; Rodríguez de Francisco, Borja; Romanò, Cecilia; Oscarson, Stefan; Millet, Oscar; Gabius, Hans-Joachim; Jiménez-Barbero, Jesús CSIC ORCID; Cañada, F. Javier | Fecha de publicación: | 1-dic-2020 | Editor: | American Chemical Society | Citación: | Journal of Organic Chemistry (JOC) 85: 16072−16081 (2020) | Resumen: | Molecular recognition of carbohydrates is a key step in essential biological processes. Carbohydrate receptors can distinguish monosaccharides even if they only differ in a single aspect of the orientation of the hydroxyl groups or harbor subtle chemical modifications. Hydroxyl-by-fluorine substitution has proven its merits for chemically mapping the importance of hydroxyl groups in carbohydrate−receptor interactions. 19F NMR spectroscopy could thus be adapted to allow contact mapping together with screening in compound mixtures. Using a library of fluorinated glucose(Glc), mannose (Man), and galactose (Gal) derived by systematically exchanging every hydroxyl group by a fluorine atom, we developed a strategy combining chemical mapping and 19F NMR T2 filtering-based screening. By testing this strategy on the proof-of-principle level with a library of 13 fluorinated monosaccharides to a set of three carbohydrate receptors of diverse origin, i.e. the human macrophage galactosetype lectin, a plant lectin, Pisum sativum agglutinin, and the bacterial Gal-/Glc-binding protein from Escherichia coli, it became possible to simultaneously define their monosaccharide selectivity and identify the essential hydroxyls for interaction. | Descripción: | 10 p.-10 fig. | Versión del editor: | https://dx.doi.org/10.1021/acs.joc.0c01830 | URI: | http://hdl.handle.net/10261/228438 | DOI: | 10.1021/acs.joc.0c01830 | ISSN: | 0022-3263 | E-ISSN: | 1520-6904 |
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