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XB-ART-8545
Anal Chem 2001 Aug 01;7315:3556-61. doi: 10.1021/ac010182v.
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Identification and structural elucidation of lectin-binding oligosaccharides by bioaffinity matrix-assisted laser desorption/ionization Fourier transform mass spectrometry.

Tseng K , Wang H , Lebrilla CB , Bonnell B , Hedrick J .


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Cortical granule lectin (CGL) is released by the egg of the South African toad Xenopus laevis upon fertilization. The lectin binds to oligosaccharides in the extracellular matrix of the egg to form a physical block to prevent additional sperm penetration or polyspermy. To identify the oligosaccharides that bind to CGL, the lectin was immobilized on the surface of a matrix-assisted laser desorption/ionization probe. This bioaffinity probe was used to determine oligosaccharides that bind preferentially to CGL. Structural analyses based on collision-induced dissociation was used to determine that oligosaccharides with the sulfate esters at the nonreducing ends preferentially bind to the lectin.

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Species referenced: Xenopus laevis
Genes referenced: cgl.2