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  2. Flagellum - Wikipedia

    en.wikipedia.org/wiki/Flagellum

    While bacterial cells often have many flagellar filaments, each of which rotates independently, the archaeal flagellum is composed of a bundle of many filaments that rotates as a single assembly. Bacterial flagella grow by the addition of flagellin subunits at the tip; archaeal flagella grow by the addition of subunits to the base.

  3. Archaellum - Wikipedia

    en.wikipedia.org/wiki/Archaellum

    [45] [46] However, unlike the bacterial flagellum archaellum has not shown to play a role in archaeal biofilm formation. [47] In archaeal biofilms, the only proposed function is thus far during the dispersal phase of biofilm when archaeal cells escape the community using their archaellum to further initiate the next round of biofilm formation.

  4. File:Flagellum base diagram-en.svg - Wikipedia

    en.wikipedia.org/wiki/File:Flagellum_base...

    English: A Gram-negative bacterial flagellum. A flagellum (plural: flagella) is a long, slender projection from the cell body, whose function is to propel a unicellular or small multicellular organism. The depicted type of flagellum is found in bacteria such as E. coli and Salmonella, and rotates like a propeller when the bacterium swims.

  5. Bacterial motility - Wikipedia

    en.wikipedia.org/wiki/Bacterial_motility

    [16] [17] [18] They provide two of several kinds of bacterial motility. [19] [20] Archaeal flagella are called archaella, and function in much the same way as bacterial flagella. Structurally the archaellum is superficially similar to a bacterial flagellum, but it differs in many details and is considered non-homologous. [21] [15]

  6. Marine prokaryotes - Wikipedia

    en.wikipedia.org/wiki/Marine_prokaryotes

    [117] [118] [119] They provide two of several kinds of bacterial motility. [120] [121] Archaeal flagella are called archaella, and function in much the same way as bacterial flagella. Structurally the archaellum is superficially similar to a bacterial flagellum, but it differs in many details and is considered non-homologous. [122] [116]

  7. Evolution of flagella - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_flagella

    The recently elucidated archaeal flagellum, or archaellum, is analogous—but not homologous—to the bacterial one. In addition to no sequence similarity being detected between the genes of the two systems, the archaeal flagellum appears to grow at the base rather than the tip, and is about 15 nanometers (nm) in diameter rather than 20.

  8. Bacterial cell structure - Wikipedia

    en.wikipedia.org/wiki/Bacterial_cell_structure

    Flagella are whip-like structures protruding from the bacterial cell wall and are responsible for bacterial motility (movement). The arrangement of flagella about the bacterial cell is unique to the species observed. Common forms include: Monotrichous – Single flagellum; Lophotrichous – A tuft of flagella found at one of the cell poles

  9. Archaea - Wikipedia

    en.wikipedia.org/wiki/Archaea

    The bacterial flagellum shares a common ancestor with the type III secretion system, [125] [126] while archaeal flagella appear to have evolved from bacterial type IV pili. [127] In contrast with the bacterial flagellum, which is hollow and assembled by subunits moving up the central pore to the tip of the flagella, archaeal flagella are ...