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植物乳杆菌中十一异戊烯醇的特性分析。

The characterization of undecaprenol of Lactobacillus plantarum.

作者信息

Gough D P, Kirby A L, Richards J B, Hemming F W

出版信息

Biochem J. 1970 Jun;118(1):167-70. doi: 10.1042/bj1180167.

Abstract

Evidence for the presence of undecaprenol in the unsaponifiable lipid of Lactobacillus plantarum (N.C.I.B. 6376) is presented. Characterization of the compound was based mainly on mass, i.r. and n.m.r. spectrometry. The prenol was isolated at a concentration of 40mug/g wet wt. of bacteria and contained over 90% (1.0-5.4% of the dose) of the (14)C present in the unsaponifiable lipid after incubation of the bacteria with [2-(14)C]mevalonate. N.m.r. spectrometry indicated the presence of two internal trans-, one alpha-cis- and seven internal cis-isoprene residues per molecule. The (3)H/(14)C ratios of the prenol after incubation of the bacteria with [2-(14)C,(4R)-4-(3)H(1)]- and [2-(14)C,(4S)-4-(3)H(1)]-mevalonate were in agreement with this stereochemistry. There was no evidence of saturated isoprene residues in the molecule. The undecaprenol appeared to be accompanied by much smaller quantities of decaprenol and nonaprenol.

摘要

本文提供了植物乳杆菌(N.C.I.B. 6376)不皂化脂质中存在十一异戊二烯醇的证据。该化合物的表征主要基于质谱、红外光谱和核磁共振光谱。该异戊二烯醇以40μg/g细菌湿重的浓度被分离出来,并且在细菌与[2-(14)C]甲羟戊酸孵育后,它包含了不皂化脂质中超过90%(占剂量的1.0 - 5.4%)的(14)C。核磁共振光谱表明每个分子存在两个内部反式、一个α-顺式和七个内部顺式异戊二烯残基。细菌与[2-(14)C,(4R)-4-(3)H(1)]-和[2-(14)C,(4S)-4-(3)H(1)]-甲羟戊酸孵育后,该异戊二烯醇的(3)H/(14)C比值与这种立体化学一致。分子中没有饱和异戊二烯残基的证据。十一异戊二烯醇似乎伴随着数量少得多的十异戊二烯醇和九异戊二烯醇。

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本文引用的文献

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METABOLISM OF MEVALONIC ACID BY LACTOBACILLUS PLANTARUM.植物乳杆菌对甲羟戊酸的代谢
J Bacteriol. 1964 Aug;88(2):361-6. doi: 10.1128/jb.88.2.361-366.1964.
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Discovery of a new acetate-replacing factor.一种新型乙酸替代因子的发现。
J Bacteriol. 1956 Oct;72(4):519-24. doi: 10.1128/jb.72.4.519-524.1956.
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Polyprenols.聚戊烯醇
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