ArticleNature communications2026
Two types of sheathed archaellum structures from Haloarcula marismortui differ in their outer layer architectures.
Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Many archaea swim by means of rotating helical filaments called archaella. Most archaella are about 10 nm in diameter and comprise multiple copies of the protein archaellin. Here, we describe two archaellum structures formed by the ArlA2 or ArlB archaellins from the haloarchaeon Haloarcula marismortui. We found that both filaments have an additional proteinaceous outer sheath surrounding their inner core, a feature not observed previously in archaea. The outer sheath structures of the two filaments differ fundamentally. The outer domain of ArlB archaellin rotates by 180
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