A N-acetyllactosamine-specific cell-binding activity in a plant pathogen, Erwinia rhapontici
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Updated: Oct 12, 2026

Detection of Histone Modifications in Plant Leaves
Published on: September 23, 2011
T K Korhonen1, K Haahtela, A Pirkola
1Department of General Microbiology, University of Helsinki, Finland.
Abstract:
A strain of the phytopathogenic bacterial species, Erwinia rhapontici, was found to cause hemagglutination of human erythrocytes that was specifically inhibited by beta-galactosides. Of the monosaccharides tested, N-acetyl galactosamine and galactose efficiently inhibited the hemagglutination. The most potent inhibitor identified was Ga1 beta 1-4GlcNAc that was 30-100-fold more potent than Ga1 beta 1-3GlcNac or Ga1 beta 1-3GalNAc. Fetuin had no effect on the hemagglutination whereas asialofetuin was inhibitory. No blood group specificity was found for the hemagglutinin. These findings indicate that the E. rhapontici strain possesses a novel bacterial cell-binding activity with specificity for terminal N-acetyllactosamine residues.
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