Teichoic acids Gram-positive Bacteria frequently have acidic polysaccharides called teichoic acids attached to their cell wall. The term teichoic acids includes all wall membrane, or capsular polymers containing glycerophosphate or ribitol phosphate residues. These polyalcohols are connected by phosphate esters and usually have other sugars and D-alanine attachedGram-positive Bacteria frequently have acidic polysaccharides called teichoic acids attached to their cell wall. The term teichoic acids includes all wall, membrane, or capsular polymers containing glycerophosphate or ribitol phosphate residues. These polyalcohols are connected by phosphate esters and usually have other sugars and D-alanine attached. Teichoic acids