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. Author manuscript; available in PMC: 2012 May 23.
Published in final edited form as: Nat Protoc. 2010 Jun;5(6):993–1004. doi: 10.1038/nprot.2010.48

Figure 6.

Figure 6

Total ion chromatograms of K4 oligosaccharides up to 24-mers in negative ion mode separated by means of RPIP-HPLC. The inset shows the structure of the partially fructosylated Escherichia coli K4 polysaccharide (a tetrasaccharide fructosylated on a glucuronic acid residue is reported as an example). The tentative structure of the K4 oligosaccharidic sequences previously determined43 is also illustrated. D-glucuronic acid is reported as GlcA, N-acetylgalactosamine as GalNAc and D-fructose as Fru.