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异支链2-羟基和3-羟基脂肪酸作为某些滑行细菌的特征性脂质成分。

Iso-branched 2- and 3-hydroxy fatty acids as characteristic lipid constituents of some gliding bacteria.

作者信息

Fautz E, Rosenfelder G, Grotjahn L

出版信息

J Bacteriol. 1979 Dec;140(3):852-8. doi: 10.1128/jb.140.3.852-858.1979.

Abstract

The fatty acids present in the total hydrolysates of several gliding bacteria (Myxococcus fulvus, Stigmatella aurantiaca, Cytophaga johnsonae, Cytophaga sp. strain samoa and Flexibacter elegans) were analyzed by combined gas-liquid chromatography and mass spectrometry. In addition to 13-methyl-tetradecanoic acid, 15-methyl-hexadecanoic acid, hexadecanoic acid, and hexadecenoic acid, 2- and 3-hydroxy fatty acids comprised up to 50% of the total fatty acids. The majority was odd-numbered and iso-branched. Small amounts of even-numbered and unbranched fatty acids were also present. Whereas 2-hydroxy-15-methyl hexadecanoic acid was characteristic for myxobacteria, 2-hydroxy-13-methyl-tetradecanoic acid, 3-hydroxy-13-methyl-tetradecanoic acid, and 3-hydroxy-15-methyl-hexadecanoic acid were dominant in the Cytophaga-Flexibacter group.

摘要

通过气相色谱-质谱联用技术分析了几种滑行细菌(黄色粘球菌、橙黄标桩菌、约翰逊噬纤维菌、萨摩亚噬纤维菌菌株和优美屈挠杆菌)总水解产物中的脂肪酸。除了13-甲基十四烷酸、15-甲基十六烷酸、十六烷酸和十六碳烯酸外,2-羟基脂肪酸和3-羟基脂肪酸占总脂肪酸的比例高达50%。大多数为奇数碳且具有异分支结构。也存在少量偶数碳且无分支的脂肪酸。2-羟基-15-甲基十六烷酸是粘细菌的特征性脂肪酸,而2-羟基-13-甲基十四烷酸、3-羟基-13-甲基十四烷酸和3-羟基-15-甲基十六烷酸在噬纤维菌-屈挠杆菌组中占主导地位。

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