Polar, peritrichous, and lateral flagella belong to three distinguishable flagellar families
Polar, peritrichous, and lateral flagella belong to three distinguishable flagellar families
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DOI：
10.1016/j.jmb.2008.04.012
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发表时间：
2008-05-29
影响因子：
5.6
通讯作者：
Aizawa, Shin-Ichi
中科院分区：
文献类型：
--
作者：
Fujii, Mikako;Shibata, Satoshi;Aizawa, Shin-Ichi
在不同的环境条件下，细菌鞭毛会将其形状转变为几种可区分的螺旋形状（多晶型物）。每种类型鞭毛的多态性都位于节径（P 与 pi D）图中的一个圆圈上，表明它们都属于一个家族。此前，我们发现海洋细菌 Idiomarina loihiensis（家族 II）的鞭毛家族与鼠伤寒沙门氏菌（家族 I）的传统鞭毛家族不同。家族 II 鞭毛的节距和直径是家族 I 鞭毛的一半。我们认为家族 I 包含周毛鞭毛，而家族 II 形成极鞭毛。在这项研究中，我们调查了其他 18 个物种的鞭毛多态性，并对它们的科类型进行了分类。先前的观察得到证实；家族 I 形成周毛鞭毛，家族 II 形成极鞭毛。此外，我们发现侧鞭毛的螺旋参数比其他两个家族小得多，因此属于一个新家族（家族III）。 (C) 2008 Elsevier Ltd. 保留所有权利。
The bacterial flagellum transforms its shape into several distinguishable helical shapes (polymorphs) under various environmental conditions. Polymorphs of each type of flagellum stay on a circle in the pitch-diameter (P versus pi D) plot, indicating that they all belong to one family. Previously, we showed that the flagellar family of a marine bacterium Idiomarina loihiensis (Family II) differed from the conventional flagellar family of Salmonella typhimurium (Family I). The pitch and diameter of Family II flagella are half those of Family I flagella. We have suggested that Family I encompasses peritrichous flagella, while Family II forms a polar flagellum. In this study, we have surveyed the polymorphs of flagella from 18 other species and categorized their family types. Previous observations were confirmed; Family I form peritrichous flagella and Family II form polar flagella. Furthermore, we found that lateral flagella had helical parameters much smaller than those of the other two Families and thus belong to a new family (Family III). (C) 2008 Elsevier Ltd. All rights reserved.