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Título: | Peptidoglycan recognition by wheat germ agglutinin. A view by NMR |
Autor: | El Biari, Khouzaima CSIC; Gaudioso, Ángel CSIC ORCID; Fernández-Alonso, M. Carmen CSIC ; Jiménez-Barbero, Jesús CSIC ORCID; Cañada, F. Javier | Palabras clave: | STD NMR Anomer Carbohydrates WGA Peptidoglycan interaction Hevein domain |
Fecha de publicación: | 28-may-2019 | Editor: | Sage Publications | Citación: | Natural Product Communications 14 (5)1-10 (2019) | Resumen: | Wheat germ agglutinin (WGA) is a lectin composed of 4 homologous hevein domains. It has been shown that WGA binds N-acetyl glucosamine (GlcNAc)-related oligosaccharides and has applications as commercial reagent to detect glycans containing such modified residues. Peptidoglycan (PGN), the main component of the bacterial cell wall, is a polymeric material made of repeating disaccharide units of GlcNAc-N-acetylmuramic acid cross-linked with short polypeptide fragments. Wheat germ agglutinin is able to bind bacterial cells, a phenomenon that could correlate with its plant-defense capacities, but there is no information at the molecular level about how WGA binds to the PGN. Herein, we present structural data on the binding of a short PGN fragment to WGA by means of saturation transfer difference nuclear magnetic resonance studies. The results show that the GlcNAc residue establishes the major contacts with WGA, followed by the N-acetylmuramic acid residue. In contrast, the peptide moiety displays minor contacts at the binding site. | Descripción: | 10 p.-6 fig.-1 tab | Versión del editor: | https://doi.org/10.1177/1934578X19849240 | URI: | http://hdl.handle.net/10261/183150 | DOI: | 10.1177/1934578X19849240 | ISSN: | 1934-578X | E-ISSN: | 1555-9475 |
Aparece en las colecciones: | (CIB) Artículos |
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