6533b86dfe1ef96bd12c95b4
RESEARCH PRODUCT
Evidence for a modular structure of the homologous repetitive C-terminal carbohydrate-binding sites of Clostridium difficile toxins and Streptococcus mutans glucosyltransferases.
Markus SauerbornC. Von Eichel-streiberH K Kuramitsusubject
Bacterial ToxinsMolecular Sequence DataEnterotoxinMicrobiologyMicrobiologyStreptococcus mutanschemistry.chemical_compoundEnterotoxinsGlucosyltransferasesBacterial ProteinsGlycosyltransferaseConsensus SequenceConsensus sequenceAromatic amino acidsAmino Acid SequenceBinding siteMolecular BiologyPeptide sequenceBinding SitesbiologySequence Homology Amino AcidClostridioides difficileCytotoxinsClostridium difficilechemistryBiochemistryGlucosyltransferasesbiology.proteinCarbohydrate MetabolismResearch Articledescription
The homologous C-terminal repeats of Clostridium difficile toxins (ToxA and ToxB) and streptococcal glucosyltransferases appear to mediate protein-carbohydrate interactions at cellular binding sites with sugar moieties as substrates. A consensus sequence of 134 repeating units from gram-positive bacteria indicates that these repeats have a modular design with (i) a stretch of aromatic amino acids proposed to be involved in the primary carbohydrate-protein interaction, (ii) an amplification of this interaction by repetition of the respective sequences, and (iii) a second domain, not characterized, that is responsible for carbohydrate specificity.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-10-01 | Journal of bacteriology |