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首页> 外文期刊>Journal of Clinical Microbiology >Cellular fatty acid compositions and isoprenoid quinone contents of 23 Legionella species.
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Cellular fatty acid compositions and isoprenoid quinone contents of 23 Legionella species.

机译：23个军团菌种的细胞脂肪酸组成和类异戊二烯醌含量。

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摘要

The cellular fatty acid compositions and ubiquinone contents of 182 Legionella strains representing 23 species were determined by capillary gas-liquid chromatography and reverse-phase high-performance liquid chromatography, respectively. Except for the type strain of Legionella erythra (ATCC 35303T), all Legionella species contained large (40 to 90%) amounts of branched-chain fatty acids and only trace to small (less than 0.5 to 5%) amounts of ester-linked hydroxy acids. The 23 species were placed in three major fatty acid groups on the basis of differences in the relative amounts of 14-methylpentadecanoic (Ci16:0), hexadecanoic (C16:1), and 12-methyltetradecanoic (Ca15:0) acids. All Legionella species contained ubiquinones with 9 to 14 isoprene units in the side chains and were divided into five different ubiquinone groups. The species were further differentiated into 16 groups on the basis of qualitative and quantitative differences in their fatty acid compositions and ubiquinone contents. Both of these chemical characteristics can be used to distinguish Legionella species from other gram-negative bacteria and rapidly and accurately identify suspected isolates before serologic and other tests are done.
机译：用毛细管气相色谱法和反相高效液相色谱法分别测定了代表23个物种的182株军团菌的细胞脂肪酸组成和泛醌含量。除军团菌型菌株（ATCC 35303T）外，所有军团菌种均含有大量（40％至90％）的支链脂肪酸，并且仅微量（少于0.5至5％）的酯键合羟基酸。根据14-甲基十五烷酸（Ci16：0），十六烷酸（C16：1）和12-甲基十四烷酸（Ca15：0）相对含量的差异，将这23个物种分为三个主要脂肪酸组。所有军团菌物种均包含在侧链中具有9至14个异戊二烯单元的泛醌，并被分为五个不同的泛醌组。根据其脂肪酸组成和泛醌含量的定性和定量差异，将其进一步分为16组。这两种化学特性均可用于区分军团菌和其他革兰氏阴性菌，并在进行血清学和其他检测之前快速，准确地鉴定可疑分离株。

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