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Showing 1 to 9 of 9 for “"flagellar filaments"”.
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Isolation and characterization of motility-defective mutants of Haloferax volcanii.
… Flagellated motile bacteria possess a number of filaments that function as cellular propellers. Motile bacteria swim outward in a low concentration agar medium (swarm medium) and form a swarm. I have isolated twenty-five independent motility-defective mutants and four independent super-motile …
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Isolation and Characterization of a Novel Motility Mutant in SALMONELLA TYPHIMURIUM
… 1-3 flagella per cell, and the length of the flagellar filaments was only 40% of the normal. The mutant phenotype was designated as CheG<sup>-</sup> and conjugational studies located <em>cheG</em> between 12 min and 33 min on the chromosomal map. Transductional crosses with <em>fla</em> …
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Geometry and Hydrodynamics of Swimming with a Bundle of Bacterial Flagella
… of life starting from unicellular organisms. Flagellar propulsion is the most common form of locomotion amongst unicellular organisms. On the one hand, eukaryotic organisms have flexible flagella which they undulate in a remarkable variety of patterns - from the whip-like motion of a …
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STRUCTURAL AND BIOCHEMICAL CHARACTERIZATION OF THE BACTERIAL FLAGELLAR MOTOR HOOK COMPLEX AND THE MS:C-RING INTERFACE
The bacterial flagellar motor (BFM) is a highly complex and specialized nano-machine that powers the rotation of the flagellar filament. The flagellar filaments serve as propellers to push the cell forward and make movement in liquid and semi-solid surfaces possible. The BFM and associated hook and …
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Unravelling the molecular mechanisms of Leishmania mexicana adhesion in the sand fly vector
… via a complex adhesion plaque from which filaments in the modified flagellum extend towards the cell body and likely connect to the flagellum attachment zone (FAZ), a cytoskeletal structure important for cell morphogenesis. While three essential kinetoplastid-insect adhesion proteins …
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Theoretical and computational investigations into structure-function relationships of biomolecular machines at atomic resolution
… by a type III secretion system, through the flagellar interior channel to the growing tip. After a flagellin monomer binds to the tip of the filament, the growing flagellum is extended. The flagellin translocation process, due to the flagellum maximum length of 20 μm, is an extreme example of …
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Tricks and tips for faster small-scale swimming: Complex fluids and elasticity
Many cells exploit the bending or rotation of flagellar filaments in order to self-propel in viscous fluids. Often swimming occurs in complex, nonlinear fluids, e.g. mucus. Futhermore even in simple Newtonian fluids, if swimming appendages are deformable then locomotion is subject to …
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Propulsion, navigation and control of biological and artificial microswimmers
… mechanisms that lead to the formation of a flagellar bundle behind the cell during its forward motion. We categorise the forces at play into `direct' and `indirect' depending on whether they are due to hydrodynamic interactions between the flagellar filaments, or triggered by flows around …
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Bacterial motility and growth in open and confined environments
… process, where syntheses of proteins for flagellar motility are upregulated after a number of division cycles at the surface.