Gram-positive cell wall The Gram-positive cell wall has a peptidoglycan layer that is relatively thick(ca. 40 nm)and comprises approximately 90% of the cell wall. The cell walls of most Gram-positive eubacteria also have teichoic acids 。5 Peptidoglycan structure Teichoic acid Cell wall (peptidoglycan Cytoplasmic embrane 参 Teichoic acid structureThe Gram-positive cell wall has a peptidoglycan layer that is relatively thick (ca. 40 nm) and comprises approximately 90% of the cell wall. The cell walls of most Gram-positive eubacteria also have teichoic acids. Gram-positive cell wall