label: Proteus genomospecies 3J-r O-specific polysaccharide
label_lc: proteus genomospecies 3j-r o-specific polysaccharide
description: "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."