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. Author manuscript; available in PMC: 2013 Feb 17.
Published in final edited form as: J Mol Biol. 2011 Dec 21;416(2):208–220. doi: 10.1016/j.jmb.2011.12.030

Figure 3. Chemical structures of (a) M. tuberculosis peptidoglycan and (b) the peptidoglycan biosynthesis intermediate, UMDP.

Figure 3

Dashed lines designate cross links to arabinogalactan or to the sugar and peptide stems of neighboring monomeric units. GlcNAc: N-acetyl-glucosamine; MurNGlyc: N-glycolyl-muramic acid; MurNAc: N-acetyl-muramic acid; m-DAP: meso-diaminopimelic acid. UDP: uridine-5'-diphosphate; R1: H or the linker unit of arabinogalactan; R2: H, CH3 (N-acetyl) or CH2OH (N-glycolyl); R3, R4: OH, NH2 or OCH3; R5: OH or amidated cross link to m-DAP.