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微球菌属菌株A1细胞壁中的一种葡萄糖与N-乙酰半乳糖胺1-磷酸的聚合物。

A polymer of glucose and N-acetylgalactosamine 1-phosphate in the wall of Micrococcus sp. A1.

作者信息

Partridge M D, Davison A L, Baddiley J

出版信息

Biochem J. 1971 Feb;121(4):695-700. doi: 10.1042/bj1210695.

Abstract
  1. The walls of Micrococcus sp. A1contain about 43% of a phosphorylated polymer. It was extracted with cold trichloroacetic acid and purified by chromatography on DEAE-cellulose. 2. The polymer contained equimolar amounts of d-glucose, N-acetylgalactosamine and phosphate, and was readily hydrolysed under gentle acidic conditions to a phosphorylated disaccharide. 3. Chemical and enzymic degradation indicated that this was 3-O-alpha-d-glucopyranosyl-N-acetylgalactosamine with a phosphomonoester group at the 6-position on the glucose. 4. Related degradation of the polymer itself indicated that the repeating structure was the disaccharide with a phosphodiester residue joining the 1-position on galactosamine to the 6-position on glucose in a neighbouring unit. This polymer is thus another example of the increasing number of microbial wall polymers or teichoic acids possessing sugar 1-phosphate linkages.
摘要
  1. 微球菌属A1菌株的细胞壁含有约43%的一种磷酸化聚合物。它用冷三氯乙酸提取,并通过DEAE-纤维素柱色谱法纯化。2. 该聚合物含有等摩尔量的D-葡萄糖、N-乙酰半乳糖胺和磷酸盐,在温和酸性条件下易水解为一种磷酸化二糖。3. 化学和酶促降解表明,这是3-O-α-D-吡喃葡萄糖基-N-乙酰半乳糖胺,葡萄糖的6位带有一个磷酸单酯基团。4. 该聚合物本身的相关降解表明,重复结构是一种二糖,其磷酸二酯残基将半乳糖胺的1位与相邻单元中葡萄糖的6位相连。因此,这种聚合物是越来越多具有糖1-磷酸键的微生物壁聚合物或磷壁酸的又一个例子。

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