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Eukaryotic flagella and cilia are identical in structure but have different lengths and functions. [9] Prokaryotic fimbriae and pili are smaller, and thinner appendages, with different functions. Cilia are attached to the surface of flagella and are used to swim or move fluid from one region to another. [10]
Cilia and flagella associated protein 157 (CFAP157) also known as chromosome 9 open reading frame 117 (c9orf117) is a protein that in humans is encoded by the CFAP157 gene. CFAP157 gene is "specifically required during spermatogenesis for flagellum morphogenesis and sperm motility and may be required to suppress the formation of supernumerary ...
[1] [2] Cilia and flagella are found on many cells, organisms, and microorganisms, to provide motility. The axoneme serves as the "skeleton" of these organelles, both giving support to the structure and, in some cases, the ability to bend. Though distinctions of function and length may be made between cilia and flagella, the internal structure ...
Membrane protrusions or cell appendages, extend from the cell membrane, and include microvilli, cilia, and flagella. [9] Microvilli increase the surface area of a tissue , such as from their abundance on tissue protrusions such as intestinal villi .
Eukaryotic flagella—those of animal, plant, and protist cells—are complex cellular projections that lash back and forth. Eukaryotic flagella are classed along with eukaryotic motile cilia as undulipodia [17] to emphasize their distinctive wavy appendage role in cellular function or motility. Primary cilia are immotile, and are not undulipodia.
Regulation of basal body production and spatial orientation is a function of the nucleotide-binding domain of γ-tubulin. [16] Plants lack centrioles and only lower plants (such as mosses and ferns) with motile sperm have flagella and basal bodies. [17]