Prokaryotic Motility Systems

Beschreibung

The Prokaryotic Motility Structures symposium highlights the various mechanisms utilized by diverse bacteria and archaea for motility. The articles range in topics from the well-studied bacterial flagellum paradigm and its variations (polar vs. lateral flagella systems and periplasmic flagella of spirochetes) to many other less understood mechanisms. These intriguing yet poorly studied mechanisms include several for translocation on solid surfaces such as the retraction and extension of type IV pili, and different mechanisms of gliding including the extrusion of slime through the junctional pore complex in cyanobacteria and myxobacteria, and the movement of cell surface components (the ratchet structure) used by Flavobacterium. The contraction of the internal cytoskeleton, thought to act as a linear motor of Spiroplasma, is yet another unusual motility mechanism in bacteria. In archaea, swimming is imparted by flagella that seem unrelated to bacterial flagella while showing similarities in composition and possibly assembly to type IV pili. As studies on motility systems have contributed to elucidate many aspects of prokaryotic biology, such as genetics, physiology, environmental sensing, protein secretion, protein interactions, and assembly of complex structures, researchers in any of these fields will benefit from this symposium. It is especially recommended to lecturers teaching microbial physiology and motility.

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K F Jarrell

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