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. 2015 Oct 5;370(1679):20150024. doi: 10.1098/rstb.2015.0024

Figure 1.

Figure 1.

Peptidoglycan assembly and the chemical composition of the primary constituents of the S. aureus cell wall. (a) A scanning electron micrograph of whole cells reveals the thick cell-wall layer surrounding S. aureus, alongside a TEM image of an isolated cell-wall sacculus. (b) The peptidoglycan precursor lipid II is assembled inside the cell with the pentaglycine bridge attached and is transported outside the cell to be incorporated into the peptidoglycan network through transglycosylation (to connect the glycan strands) and transpeptidation (to cross-link the peptides). (c) Chemical structure of the S. aureus peptidoglycan and wall teichoic acid. (Online version in colour.)