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Unidirectional movement of flares of cells of Myxococcus xanthus.
Critical Reviews in Microbiology ( IF 6.5 ) Pub Date : 2006-07-01 , DOI: 10.1080/10408410600709826
Arthur L Koch 1
Affiliation  

Amongst other modes, Myxococcal cells move in swarms that are flares or columns of cells. It has been argued that this is a strategy allowing a large enough number of them to encounter food bacteria. Then, the combined large amount of extracellular lytic enzymes from the mass of cells can provide adequate nutrient resources from the food bacteria for all the myxococci of the swarm. However, how they move as a coherent column has not been adequately explained. Here based on the idea that a rare cell can experience a special mutation such that it moves only unidirectionally, a proposal to account for this aspect of Myxococcus cell movement is suggested. Although wild type individual organisms of this species engage in forward and back movements, a mutant cell that moves unidirectionally can bias the movement of associated wild type cells and lead to the formation of a column of cells, headed by such a unique mutated cell. The non-mutated cells follow along it is suggested because of the S-motility (or social motility) system. This may link them to this single unidirectionally moving mutant cell to give a coherent movement to the column. This proposed type of mutation back mutates to wild type and the column no longer functions as such and only wild-type cells are present.

中文翻译:

粘菌球菌的细胞耀斑的单向运动。

在其他模式中,粘球菌细胞成群移动,成群爆发或成列。有人认为,这是一种使足够多的人遇到食物细菌的策略。然后,来自细胞团的大量细胞外裂解酶可以为整个群的粘球菌提供来自食物细菌的充足营养资源。但是,它们作为连贯的列如何移动尚未得到充分的解释。在此,基于这样的想法,即稀有细胞会经历特殊的突变,从而使其只能单向运动,因此提出了解决粘球菌运动这一方面的建议。尽管该物种的野生型个体生物体参与向前和向后运动,单向运动的突变细胞会偏向相关野生型细胞的运动,并导致以这种独特的突变细胞为首的细胞列的形成。由于S-能动性(或社会能动性)系统,建议非突变细胞跟随它。这可以将它们链接到这个单向移动的突变细胞,以使色谱柱产生连贯的运动。拟议的突变类型会突变回野生型,因此色谱柱不再发挥作用,仅存在野生型细胞。
更新日期:2019-11-01
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