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13C-NMR spectra and corresponding structures of OPSs from LPSs produced by wild-type, mutant, and complemented strains. (A) CS338 (CS332/pLPS17). (B) CS339 (CS332/pLPS20). (C) CS333 (AM511/pLAW300). Signals for the 8-O-acetyl group (Me at δ 22.0 and CO at δ 174.4) are marked by stars. Numbers refer to carbons C1 to C9 of legionaminic acid.
