... general structural elementof bacterial lipopolysaccharide epitopes. Biochemistry 38, 6449–6459.Ó FEBS 2002 Chemical structure of E. coli R3 and R4 LPS (Eur. J. Biochem. 269) 5991 Structural analysis ... straightforwardinterpretation the spectra were charge-deconvoluted.RESULTS Structural analysis ofE. coli2513 core-oligosaccharide(R4 core)Compositional analysis of LPS identified Gal, Glc, GlcN,Kdo,L,D-Hep, ... Commun. 159, 618–623.17. Dabrowski, J. (2002) Two-dimensional and related NMR meth-ods in structural analysis of oligosaccharides and polysaccharides.In Two-Dimensional NMR Spectroscopy (Croasmun,...