Definition: |
A polysaccharide derivative consisting of a repeating unit of beta-D-glucuronosyl, beta-D-galacturonosyl and N-acetyl-beta-D-glucosaminyl residues linked sequentially (1->3) and (1->3), to the glucuronosyl and N-acetylglucosaminyl residues of which are linked respectively (1->2) and (1->6) an N-acetyl-beta-D-glucosaminyl residue and an alpha-D-glucosyl residue, while the galacturonosyl residue forms an amide with 3-O-acetyl-L-threonine, the complete pentasaccharide repeating units all being linked (1->4). The O-polysaccharide of Proteus genomospecies 3J-r.
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