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13型肺炎球菌的型特异性物质。

The type-specific substance from Pneumococcus type 13.

作者信息

Watson M J, Tyler J M, Buchanan J G, Baddiley J

出版信息

Biochem J. 1972 Nov;130(1):45-54. doi: 10.1042/bj1300045.

Abstract
  1. The type-specific substance, S.13, from Pneumococcus type 13 was subjected to hydrolysis with alkali, followed by enzymic dephosphorylation, to yield a pentasaccharide. 2. The pentasaccharide, corresponding to the dephosphorylated repeating unit of S.13, was shown to be O-beta-d-galactopyranosyl-(1-->4)-O-beta- d-glucopyranosyl-(1-->3)-O-beta-d- galactofuranosyl-(1-->4)-O-2-acetamido-2-deoxy-beta-d- glucopyranosyl-(1-->2)-ribitol. 3. The phosphodiester linkages in S.13 join the hydroxyl group at position 1 of ribitol and the hydroxyl group at position 4 of a galactopyranosyl residue in the next repeating unit. 4. Ester groups, presumably O-acetyl, are located on positions 2 or 3 of most glucopyranosyl residues in S.13. 5. A partial structure for S.13 is proposed.
摘要
  1. 来自13型肺炎球菌的型特异性物质S.13先用碱水解,然后进行酶促脱磷酸作用,得到一种五糖。2. 该五糖对应于S.13脱磷酸化的重复单元,其结构为O-β-D-吡喃半乳糖基-(1→4)-O-β-D-吡喃葡萄糖基-(1→3)-O-β-D-呋喃半乳糖基-(1→4)-O-2-乙酰氨基-2-脱氧-β-D-吡喃葡萄糖基-(1→2)-核糖醇。3. S.13中的磷酸二酯键将核糖醇1位的羟基与下一个重复单元中吡喃半乳糖基残基4位的羟基相连。4. 酯基(推测为O-乙酰基)位于S.13中大多数吡喃葡萄糖基残基的2位或3位。5. 提出了S.13的部分结构。

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