Structures of representative glycans found on bacterial cells, with exclusively bacterial monosaccharides highlighted in color. Structures are grouped according to type of glycoconjugate, including peptidoglycan, glycolipids, polysaccharides, and glycoproteins, with known distribution indicated in pa rentheses. Abbreviations: MurNAc = muramic acid; KDO = 3-deoxy-D-manno-oct-2-ulosonic acid; heptose = L-glycero-D-mannoheptose; galf = galactofuranose; AAT = 2-acetamido-4-amino-2,4,6-trideoxyhexose; Pse = pseudaminic acid; Leg = legionaminic acid; DATDH = 2,4-diacetamido-2,4,6-trideoxyhexose; FucNAc = N-acetylfucosamine; Bac = bacillosamine