name: archaeal-type flagellum
def: "A non-membrane-bounded organelle superficially similar to a bacterial-type flagellum; they both consist of filaments extending outside the cell, and rotate to propel the cell, but the archaeal flagella (also called archaella) have a unique structure which lacks a central channel. Similar to bacterial type IV pilins, the archaeal flagellins (archaellins) are made with class 3 signal peptides and they are processed by a type IV prepilin peptidase-like enzyme. The archaellins are typically modified by the addition of N-linked glycans which are necessary for proper assembly and/or function." [GOC:cilia, GOC:krc, http://en.wikipedia.org/wiki/Flagellum#Archaeal, PMID:21265748, PMID:23146836, PMID:23204365, PMID:24330313]
synonym: "archaeal flagellum" RELATED 
synonym: "archaella" RELATED 
synonym: "archaellum" EXACT 
is_a: GO:0042995 ! cell projection
is_a: GO:0043228 ! non-membrane-bounded organelle
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