新月柄杆菌中肽聚糖的氨基酸组成。

Amino acid composition of peptidoglycan in Caulobacter crescentus.

作者信息

Fujiki K, Fukuda A, Okada Y

出版信息

J Biochem. 1976 Dec;80(6):1453-5. doi: 10.1093/oxfordjournals.jbchem.a131421.

DOI:10.1093/oxfordjournals.jbchem.a131421

Abstract

Peptidoglycan of a gram-negative stalked bacterium, Caulobacter crescentus CB13, contained alanine, diaminopimelic acid, and glutamic acid, in molar ratios of 2 : 1 : 1. The amino acid compositions of peptidoglycans isolated from cultures enriched in swarmer and stalked cells, and from a stalk-less mutant were similar. This finding conflicts with a previous observation that swarmer peptidoglycan does not contain diaminopimelic acid (Goodwin and Shedlarski (1975) Arch. Biochem. Biophys. 170, 23-36). It appears that, despite the morphological differences, the Caulobacter cells all contain a similar peptidoglycan in the cell wall.

摘要

革兰氏阴性有柄细菌新月柄杆菌CB13的肽聚糖含有丙氨酸、二氨基庚二酸和谷氨酸，摩尔比为2:1:1。从富含游动细胞和有柄细胞的培养物以及无柄突变体中分离出的肽聚糖的氨基酸组成相似。这一发现与之前的观察结果相矛盾，即游动细胞的肽聚糖不含二氨基庚二酸（古德温和谢德拉斯基（1975年）《生物化学与生物物理学文献》170，23 - 36）。看来，尽管存在形态差异，但新月柄杆菌的所有细胞在细胞壁中都含有相似的肽聚糖。