| Literature DB >> 16631357 |
Hideaki Uchida1, Hideki Kinoshita, Yasushi Kawai, Haruki Kitazawa, Koh Miura, Kenichi Shiiba, Akira Horii, Katsunori Kimura, Naoki Taketomo, Munehiro Oda, Takaji Yajima, Tadao Saito.
Abstract
Adherent lactic acid bacteria (LAB) in the human intestine were investigated using the surface plasmon resonance technique with the biosensor BIACORE-1000. Ninety-three LAB strains were isolated from human feces and evaluated for binding to human blood type-A antigen [GalNAcalpha1-3 (Fucalpha1-2) Gal-: A-trisaccharide] expressed in the intestinal mucosa. Eleven strains showed strong adherence to an A-trisaccharide biotinyl polymer (BP) probe, and slightly or no adherence to a B-trisaccharide BP probe. Four strains with high adherence (high A/B ratio) were selected and their surface layer proteins (SLPs) were evaluated for A-antigen ligand binding using BIACORE. The SLP from L. brevis strain OLL2772 showed a single band at ca. 48 kDa by SDS-PAGE analysis and it had a very strong adherence to the human A-antigen, as shown using an anti-A lectin blocking technique. A partial N-terminal sequence of the band showed strong homology to an S-layer protein of L. brevis ATCC8287T. The probiotic LAB binds to human blood type-A antigen expressed in the intestinal mucosa which may aid in colonization of the gut.Entities:
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Year: 2006 PMID： 16631357 DOI： 10.1016/j.resmic.2006.03.001
Source DB: PubMed Journal: Res Microbiol ISSN： 0923-2508 Impact factor: 3.992