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. 2009 Jul 24;191(19):5953–5963. doi: 10.1128/JB.00647-09

FIG. 7.

FIG. 7.

One-dimensional (top panel) and two-dimensional (bottom panel) NMR spectra of extracts from A. baumannii S1Δpga-c identifying both acetylated glucosamines in PNAG (spots a to g) and deacetylated glucosamines in PNAG (spots h and i). The COSY spectrum cross-peaks are labeled as follows: spot a, β-GlcNAc H-1/H-2 (4.60/3.78 ppm); spot b, β-GlcNAc H-2/H-3 (3.78/3.61 ppm); spot c, β-GlcNAc H-3/H-4 (3.61/3.41 ppm); spot d, β-GlcNAc H-4/H-5 (3.41/3.63 ppm); spot e, β-GlcNAc H-5/H-6 (3.63/3.81 ppm); spot f, β-GlcNAc H-5/H-6′ (3.63/4.24 ppm); spot g, β-GlcNAc H-6/H-6′ (3.81/4.24 ppm); spot h, β-GlcNH2 H-1/H-2 (4.49/2.72 ppm); and spot i, β-GlcNH2 H-2/H-3 (2.72/3.43 ppm).