نتایج جستجو برای: flagellum

تعداد نتایج: 2379  

Journal: :The Journal of experimental biology 2006
Miki Fujimura Makoto Okuno

It is well known that any part of a flagellum has the ability to bend. However, it is not clearly understood how flagella generate successive bending waves spontaneously. Some micromanipulation experiments have suggested that the base of the flagellum is required. By contrast, spontaneous bending waves could be generated in computer simulation work if the microtubules were tied together at one ...

Journal: :Physics of Fluids 2010

2005
Guy R. Cornelis

The injectisome has a common evolutionary origin with the bacterial flagellum, as suggested by the fact that the basal bodies of both nanomachines are similar and include many proteins with a significant similarity. Moreover, there are also functional similarities, such as the use of specific chaperones (5, 45, 104, 108, 138) or of molecular systems regulating the size of the external appendage...

Journal: :Journal of bacteriology 1961
M A WILLIAMS G B CHAPMAN

Migula, in 1900, separated the genus Spirillum Ehrenberg from the other spiral bacteria on the basis of motility by means of tufts of polar flagella. Mligula mentioned the fact that the tuft, in certain species, was often agglutinated into a fascicle which appeared as a single flagellum in flagellar stain preparations. Tufts of polar flagella long remained a generally accepted distinguishing mo...

Journal: :The Journal of experimental biology 2007
Joseph A C Humphrey Deforest Mellon

Analytical and numerical methodologies are combined to investigate the flow fields that approach and pass around the lateral flagellum of the crayfish Procambarus clarkii. Two cases are considered, the first being that of a free-flicking flagellum and the second corresponding to a flagellum fixed inside a small bore tube. The first case is the natural one while the second corresponds to the exp...

2005

The injectisome has a common evolutionary origin with the bacterial flagellum, as suggested by the fact that the basal bodies of both nanomachines are similar and include many proteins with a significant similarity. Moreover, there are also functional similarities, such as the use of specific chaperones (5, 45, 104, 108, 138) or of molecular systems regulating the size of the external appendage...

Journal: :Infection and immunity 2003
Timothy J J Inglis Terry Robertson Donald E Woods Nichole Dutton Barbara J Chang

In this study we investigated the role of the bacterial flagellum in Burkholderia pseudomallei entry to Acanthamoeba astronyxis trophozoites. B. pseudomallei cells were tethered to the external amoebic surface via their flagella. MM35, the flagellum-lacking fliC knockout derivative of B. pseudomallei NCTC 1026b did not demonstrate flagellum-mediated endocytosis in timed coculture, confirming th...

2005

The injectisome has a common evolutionary origin with the bacterial flagellum, as suggested by the fact that the basal bodies of both nanomachines are similar and include many proteins with a significant similarity. Moreover, there are also functional similarities, such as the use of specific chaperones (5, 45, 104, 108, 138) or of molecular systems regulating the size of the external appendage...

Journal: :Flow 2023

Flagellated bacteria propel themselves by rotating flexible flagella driven independent motors. Depending on the rotation direction of motors and handedness helical filaments, either pull or push cell body. Motivated experimental observations Magnetococcus marinus , we develop an elastohydrodynamic model to study locomotion a bi-flagellated bacterium with one puller flagellum pusher flagellum. ...

Journal: :Journal of bacteriology 2002
Jonathan McClain David R Rollo Brenda G Rushing Carl E Bauer

Rhodospirillum centenum is a purple photosynthetic bacterium that is capable of differentiating from vibrioid swimming cells that contain a single polar flagellum into rod-shaped swarming cells that have a polar flagellum plus numerous lateral flagella. Microscopic studies have demonstrated that the polar flagellum is constitutively present and that the lateral flagella are found only when the ...

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