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Surface Listeria monocytogenes carbohydrate-binding components revealed by agglutination with neoglycoproteins.

Carbohydrate-binding components were shown to be present at the surface of Listeria monocytogenes by means of a panel of neoglycoproteins using direct agglutination. These lectin-like components bind on neoglycoproteins bearing D-glucosamine, L-fucosylamine, or para-amino-phenyl-alpha-D-mannopyrannoside residues. The interactions were inhibited by the carbohydrate moieties specific to the neoglycoproteins. The protein nature of the lectin-like components of L. monocytogenes was ascertained by the loss of carbohydrate-binding capacity following protease treatment.