the presence of the disaccharide , glucosyl ( beta 1 -- -- 4 ) n-acetylglucosamine , in the linkage regions between teichoic acids and peptidoglycan was confirmed by the isolation of a disaccharide-linked glycopeptide fragment from each complex after treatment with mild alkali and of a teichoic acid-linked saccharide from each cell wall preparation after treatment with mild acid .
C0030958
peptidoglycan
C0017953
glycopeptide