Publication Abstract from PubMed
Clostridium difficile TcdA is a large toxin that binds carbohydrates on intestinal epithelial cells. A 2-A resolution cocrystal structure reveals two molecules of alpha-Gal-(1,3)-beta-Gal-(1,4)-beta-GlcNAcO(CH(2))(8)CO(2)CH(3) binding in an extended conformation to TcdA. Residues forming key contacts with the trisaccharides are conserved in all seven putative binding sites in TcdA, suggesting a mode of multivalent binding that may be exploited for the rational design of novel therapeutics.
Carbohydrate recognition by Clostridium difficile toxin A.,Greco A, Ho JG, Lin SJ, Palcic MM, Rupnik M, Ng KK Nat Struct Mol Biol. 2006 May;13(5):460-1. Epub 2006 Apr 16. PMID:16622409[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
