Jennings H J, Rosell K G, Johnson K G
Carbohydr Res. 1982 Jul 1;105(1):45-56. doi: 10.1016/s0008-6215(00)81853-4.
The acidic polysaccharide (K6) antigen from Escherichia coli LP 1092 contains D-ribose and 3-deoxy-D-manno-octulosonic acid in the molar ratio of 2:1, respectively. Spectroscopic data (13C- and 1H-n.m.r.), methylation analyses, and periodate oxidation indicate that the polysaccharide is composed of the foregoing components essentially in the following trisaccharide sequence: leads to 2)-beta-D-Ribf-(1 leads to 2)-beta-D-Ribf-(1 leads to 7)-alpha-D-KDO-(2 leads to. The polysaccharide also contains O-acetyl substituents (approximately 0.2-0.3 mol per KDO residue).
来自大肠杆菌LP 1092的酸性多糖（K6）抗原分别含有摩尔比为2:1的D-核糖和3-脱氧-D-甘露糖辛酸。光谱数据（13C和1H核磁共振）、甲基化分析和高碘酸盐氧化表明，该多糖基本上由以下三糖序列中的上述成分组成：2）-β-D-核糖基-（1→2）-β-D-核糖基-（1→7）-α-D-KDO-（2→。该多糖还含有O-乙酰基取代基（每KDO残基约0.2-0.3摩尔）。
