3.6.4.B6 archaeal-type flagellum archaellum 3.6.4.B6 archaeal-type flagellum archaellum, a rotating motility appendage found only in the archaea; it assembles with a type IV pili-like mechanism 3.6.4.B6 archaeal-type flagellum archaellum, soluble motor ATPase FlaI localizes to the membrane, possibly via an interaction of the archaellum membrane components 3.6.4.B6 flagellum - 3.6.4.B6 membrane homologously expressed 6 * His-tagged FlaI in Sulfolobus localizes solely to membranes