Jann B, Hofmann P, Jann K
Carbohydr Res. 1983 Aug 16;120:131-41. doi: 10.1016/0008-6215(83)88012-4.
The chemical structure of the K14-antigenic polysaccharide (K14 antigen) of Escherichia coli 06:K14:H31 was elucidated by determination of the composition, 1H- and 13C-n.m.r. spectroscopy, periodate oxidation, and study of the oligosaccharides obtained by partial hydrolysis. The polysaccharide consists of [O-(2-acetamido-2-deoxy-beta-D-galactopyranosyl)-(1 leads to 5)-O-(3-deoxy-beta-D-manno-octulopyranosylonic acid)-(2 leads to 6)] repeating units, approximately 60% of the octonic acid units being O-acetylated and approximately 10% O-propionylated at O-8. The sequence of acetylated and propionylated residues is not known. The serologically-specific part of the K14 antigen residues in the polysaccharide part.
通过对大肠杆菌O6:K14:H31的K14抗原性多糖（K14抗原）的组成、1H和13C核磁共振光谱、高碘酸盐氧化以及对部分水解得到的寡糖的研究，阐明了其化学结构。该多糖由[O-(2-乙酰氨基-2-脱氧-β-D-吡喃半乳糖基)-(1→5)-O-(3-脱氧-β-D-甘露糖基辛吡喃糖醛酸)-(2→6)]重复单元组成，大约60%的辛糖酸单元在O-8位被O-乙酰化，大约10%被O-丙酰化。乙酰化和丙酰化残基的序列尚不清楚。K14抗原的血清学特异性部分存在于多糖部分的残基中。
