Figure 4

NMR. Selected regions of (a) ¹H NMR spectrum of the PS from strain SFL1683 showing resonances from O- and N-acetyl groups and (b) ¹H,¹H-TOCSY (τ_mix 120 ms) NMR spectrum of the PS from strain SFL2516 showing spin systems originating from the H6 protons in the methyl groups of rhamnosyl residues. Annotations are given with respect to the O-acetylation pattern in the O-antigen.