嗜冷细菌弧菌属菌株ABE-1中的一种反式不饱和脂肪酸。
A trans-unsaturated fatty acid in a psychrophilic bacterium, Vibrio sp. strain ABE-1.
作者信息
Okuyama H, Sasaki S, Higashi S, Murata N
机构信息
Department of Botany, Faculty of Science, Hokkaido University, Sapporo, Japan.
出版信息
J Bacteriol. 1990 Jun;172(6):3515-8. doi: 10.1128/jb.172.6.3515-3518.1990.
Abstract
A high level of a trans-unsaturated fatty acid was found in the phospholipids of a psychrophilic bacterium, Vibrio sp. strain ABE-1. This fatty acid was identified as 9-trans-hexadecenoic acid (C16:19t) by gas-liquid chromatography and infrared absorption spectrometry. C16:1(9)t accounted for less than 1% of the total fatty acids in cells grown at 5 degrees C and reached 12% of the total at 20 degrees C. We suggest that the increase in the level of the trans-unsaturated fatty acid is related to the high growth rate of this bacterium at elevated temperatures. Possible biological roles of the trans-unsaturated fatty acid in the adaptation of the microorganism to the ambient temperature are discussed.
摘要
在嗜冷细菌弧菌属菌株ABE-1的磷脂中发现了高水平的反式不饱和脂肪酸。通过气液色谱法和红外吸收光谱法，该脂肪酸被鉴定为9-反式十六碳烯酸（C16:19t）。在5摄氏度下生长的细胞中，C16:1(9)t占总脂肪酸的比例不到1%，而在20摄氏度时达到总脂肪酸的12%。我们认为，反式不饱和脂肪酸水平的增加与该细菌在升高温度下的高生长速率有关。讨论了反式不饱和脂肪酸在微生物适应环境温度方面可能的生物学作用。
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