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粪肠球菌N.C.I.B. 8191细胞膜中的脂磷壁酸复合物。

The lipid-teichoic acid complex in the cytoplasmic membrane of Streptococcus faecalis N.C.I.B. 8191.

作者信息

Toon P, Brown P E, Baddiley J

出版信息

Biochem J. 1972 Apr;127(2):399-409. doi: 10.1042/bj1270399.

Abstract
  1. A lipid-teichoic acid complex was isolated from Streptococcus faecalis N.C.I.B. 8191. The covalent nature of the linkage between teichoic acid and lipid was established. 2. The complex exhibits macromolecular properties in solution, and ultracentrifugation studies show that these are due to micelle formation. 3. From chemical studies it is concluded that the teichoic acid is a poly(glycerol phosphate) in which some of the glycerol hydroxyl groups possess kojibiosyl [2-O-alpha-d-glucopyranosyl-(1-->2)-alpha-d- glucopyranosyl] substituents, together with d-alanine ester residues. 4. The lipid is 1-kojibiosyl diglyceride, already known as a membrane component of this organism, with probably a phosphatidyl substituent. The phosphatidyl kojibiosyl diglyceride is attached to the teichoic acid through a phosphodiester linkage, and the chain of the teichoic acid contains 28-35 units. 5. Although the complex represents the whole of the membrane teichoic acid in this organism, only about 12% of the membrane glycolipid is associated with teichoic acid. 6. Two phosphatidyl glycolipids, closely resembling that bearing the teichoic acid, were isolated from the lipids of the organism and were partly characterized.
摘要
  1. 从粪链球菌N.C.I.B. 8191中分离出一种脂磷壁酸复合物。确定了磷壁酸与脂质之间连接的共价性质。2. 该复合物在溶液中表现出大分子特性,超速离心研究表明这些特性是由于胶束形成。3. 化学研究得出结论,磷壁酸是一种聚(甘油磷酸),其中一些甘油羟基带有曲二糖基[2-O-α-D-吡喃葡萄糖基-(1→2)-α-D-吡喃葡萄糖基]取代基以及D-丙氨酸酯残基。4. 脂质是1-曲二糖基二甘油酯,已知是该生物体的一种膜成分,可能带有磷脂酰取代基。磷脂酰曲二糖基二甘油酯通过磷酸二酯键连接到磷壁酸上,磷壁酸链含有28-35个单元。5. 尽管该复合物代表了该生物体中整个膜磷壁酸,但只有约12%的膜糖脂与磷壁酸相关。6. 从该生物体的脂质中分离出两种与携带磷壁酸的磷脂酰糖脂非常相似的磷脂酰糖脂,并对其进行了部分表征。

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