Carbohydrate-carbohydrate interaction provides adhesion force and specificity for cellular recognition

Bucior, I. and Scheuring, S. and Engel, A. and Burger, M. M.. (2004) Carbohydrate-carbohydrate interaction provides adhesion force and specificity for cellular recognition. The Journal of cell biology, Vol. 165, H. 4. pp. 529-537.

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Official URL: http://edoc.unibas.ch/dok/A5262402

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The adhesion force and specificity in the first experimental evidence for cell-cell recognition in the animal kingdom were assigned to marine sponge cell surface proteoglycans. However, the question whether the specificity resided in a protein or carbohydrate moiety could not yet be resolved. Here, the strength and species specificity of cell-cell recognition could be assigned to a direct carbohydrate-carbohydrate interaction. Atomic force microscopy measurements revealed equally strong adhesion forces between glycan molecules (190-310 piconewtons) as between proteins in antibody-antigen interactions (244 piconewtons). Quantitative measurements of adhesion forces between glycans from identical species versus glycans from different species confirmed the species specificity of the interaction. Glycan-coated beads aggregated according to their species of origin, i.e., the same way as live sponge cells did. Live cells also demonstrated species selective binding to glycans coated on surfaces. These findings confirm for the first time the existence of relatively strong and species-specific recognition between surface glycans, a process that may have significant implications in cellular recognition.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Former Organization Units Biozentrum > Structural Biology (Engel)
UniBasel Contributors:Engel, Andreas H
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Rockefeller University Press
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:31 Dec 2015 10:43
Deposited On:22 Mar 2012 13:23

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