Formation of highly ordered cross-linked lattices between asparagine-linked oligosaccharides and lectins observed by electron microscopy

L. Bhattacharyya, M. I. Khan, J. Fant, Curtis F. Brewer

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Abstract

The interaction of asparagine-linked carbohydrates (N-linked) with carbohydrate binding proteins called lectins has been demonstrated to be involved in a variety of cellular recognition processes. Certain N-linked carbohydrates have been shown to be multivalent and capable of binding, cross-linking, and precipitating lectins (Bhattacharyya, L., Ceccarini, C., Lorenzoni, P., and Brewer, C.F. (1987) J. Biol. Chem. 262, 1288-1293; Bhattacharyya, L., Haraldsson, M., and Brewer, C.F. (1987) J. Biol. Chem. 262, 1294-1299; Bhattacharyya, L., Haraldsson, M., and Brewer, C.F. (1988) Biochemistry 27, 1034-1041). Recent data have further suggested that certain oligomannose and bisected hybrid-type N-linked glycopeptides form homogeneous cross-linked lattices with concanavalin A (Bhattacharyya, L., Khan, M.I., and Brewer, C.F. (1988) Biochemistry 27, 8762-8767). In the present study, evidence has been obtained from electron microscopy for the formation of highly ordered and distinct lattices for two bivalent complex type oligosaccharides cross-linked with soybean lectin (Glycine max) and isolectin A from Lotus tetragonolobus, respectively. The results indicate a new source of specificity for interactions of N-linked carbohydrates with lectins, namely their ability to form highly ordered homogeneous aggregates.

Original languageEnglish (US)
Pages (from-to)11543-11545
Number of pages3
JournalJournal of Biological Chemistry
Volume264
Issue number20
StatePublished - 1989

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Asparagine
Oligosaccharides
Lectins
Electron microscopy
Electron Microscopy
Biochemistry
Carbohydrates
Glycopeptides
Concanavalin A
Soybeans
Glycine

ASJC Scopus subject areas

  • Biochemistry

Cite this

Formation of highly ordered cross-linked lattices between asparagine-linked oligosaccharides and lectins observed by electron microscopy. / Bhattacharyya, L.; Khan, M. I.; Fant, J.; Brewer, Curtis F.

In: Journal of Biological Chemistry, Vol. 264, No. 20, 1989, p. 11543-11545.

Research output: Contribution to journalArticle

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