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Structure of GBS cell-wall-associated patterns. The peptidoglycan macromolecule of the GBS cell wall is distinct from those of many other gram-positive bacteria by the cross-linking interpeptide (l-Ala-l-Ser or l-Ala-l-Ala). The structure of the glycolipid Glc(α1-2)Glc(α1-3)diacylglycerol in GBS LTA is different from those revealed in S. aureus and S. pneumoniae but similar to those in Enterococcus, Leuconostoc, and Lactococcus spp. (86).
