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  • Title: The glycosylated enzyme-binding assay for the study of the interaction of free and immobilized lectins with carbohydrates.
    Author: Mislovicová D, Vikartovská A, Gemeiner P.
    Journal: J Biochem Biophys Methods; 1997 Aug 01; 35(1):37-48. PubMed ID: 9310866.
    Abstract:
    The glycosylated enzymes (invertase and glucose oxidase) were used as the competitive markers for a simple and rapid determination of the lectin-saccharide interactions. The method, based on the formation of the conjugate of an appropriate glycoenzyme with the specific carbohydrate-binding lectins and the inhibition of the conjugate formation with a monosaccharide, was described. This method was used to estimate the relative carbohydrate specificity of Concanavalin A for monosaccharides derived from D-mannose. The inhibition effect of the saccharides on the formation of Concanavalin A-glycosylated enzyme precipitate was compared with their influence on the enzyme sorption on conjugate Concanavalin A-bead cellulose support. The amount of the interacting enzyme was estimated either indirectly from its concentration in a supernatant that was determined spectrophotometrically (Con A was in a free or immobilized form) or directly in the immobilized form linked to Con A-sorbent using the flow microcalorimetric method. The results obtained, using different methods, agreed in general.
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