BACTERIA SWIM BY ROTATING THEIR FLAGELLAR FILAMENTS
BACTERIA SWIM BY ROTATING THEIR FLAGELLAR FILAMENTS
复制标题
DOI：
10.1038/245380a0
复制
发表时间：
1973-01-01
期刊：
影响因子：
64.8
通讯作者：
ANDERSON, RA
中科院分区：
文献类型：
--
作者：
BERG, HC;ANDERSON, RA
人们普遍认为细菌通过移动鞭毛来游泳，但这种运动是如何产生的仍然不清楚。鞭毛具有螺旋状的丝状体、近端的钩以及在其基部与细胞壁和细胞质膜相连的成分。如果每个细胞有几个鞭毛，则鞭毛倾向于形成束并一致地移动。当用高速摄影机观察时，这些束显示出螺旋状的运动。人们普遍认为，每根灯丝都传播螺旋波。我们将在这里表明，现有的证据有利于一个模型，其中每个灯丝旋转。
IT is widely agreed that bacteria swim by moving their flagella, but how this motion is generated remains obscure1,2. A flagellum has a helical filament, a proximal hook, and components at its base associated with the cell wall and the cytoplasmic membrane. If there are several flagella per cell, the filaments tend to form bundles and to move in unison. When viewed by high-speed cinematography, the bundles show a screw-like motion. It is commonly believed that each filament propagates a helical wave3. We will show here that existing evidence favours a model in which each filament rotates.