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Partial 1H,13C heteronuclear single-quantum coherence spectrum of the O-polysaccharide of E. coli CWG1217 Δwzx-wbbK harboring the R. terrigena O-antigen gene cluster. The corresponding parts of the 1H and 13C NMR spectra are shown along the axes. The numbers refer to H/C pairs in sugar residues, designated as shown in Table 1.
