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Keyword - Flagellum (KW-0282)

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Protein present in the flagellum, a long whip-like or feathery structure which propels the cell through a liquid medium. This motile cilium is produced by unicellular eukaryotes and by the motile male gametes of many eukaryotic organisms. The flagella commonly have a characteristic axial '9+2' microtubular array (axoneme) and bends are generated along the length of the flagellum by restricted sliding of the nine outer doublets.


  • Flagella
  • Motile cilia
  • Motile cilium
  • Undulipodia
  • Undulipodium


Cellular component

Gene Ontology


motile cilium [ GO:0031514 ]


Cell projectionCiliumFlagellumCellular component
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