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TitleThe "Jack-of-all-Trades" Flagellum From and Was Horizontally Acquired From an Ancestral β-Proteobacterium.
Journal, issue, pagesFront Microbiol, Vol. 12, Page 643180, Year 2021
Publish dateMar 30, 2021
AuthorsJosie L Ferreira / Izaak Coleman / Max L Addison / Tobias Zachs / Bonnie L Quigley / Kristin Wuichet / Morgan Beeby /
PubMed AbstractThe γ-proteobacteria are a group of diverse bacteria including pathogenic , and species. The majority swim in liquids with polar, sodium-driven flagella and swarm on surfaces with lateral, non- ...The γ-proteobacteria are a group of diverse bacteria including pathogenic , and species. The majority swim in liquids with polar, sodium-driven flagella and swarm on surfaces with lateral, non-chemotactic flagella. Notable exceptions are the enteric Enterobacteriaceae such as and . Many of the well-studied Enterobacteriaceae are gut bacteria that both swim and swarm with the same proton-driven peritrichous flagella. How different flagella evolved in closely related lineages, however, has remained unclear. Here, we describe our phylogenetic finding that Enterobacteriaceae flagella are not native polar or lateral γ-proteobacterial flagella but were horizontally acquired from an ancestral β-proteobacterium. Using electron cryo-tomography and subtomogram averaging, we confirmed that Enterobacteriaceae flagellar motors resemble contemporary β-proteobacterial motors and are distinct to the polar and lateral motors of other γ-proteobacteria. Structural comparisons support a model in which γ-proteobacterial motors have specialized, suggesting that acquisition of a β-proteobacterial flagellum may have been beneficial as a general-purpose motor suitable for adjusting to diverse conditions. This acquisition may have played a role in the development of the enteric lifestyle.
External linksFront Microbiol / PubMed:33859630 / PubMed Central
MethodsEM (subtomogram averaging)
Resolution83.0 - 120.0 Å
Structure data

EMDB-10000:
Lateral flagellar motor from Plesiomonas shigelloidea
Method: EM (subtomogram averaging) / Resolution: 120.0 Å

EMDB-4999:
Flagellar motor from Bordetella bronchiseptica
Method: EM (subtomogram averaging) / Resolution: 83.0 Å

Source
  • Plesiomonas shigelloides (bacteria)
  • Bordetella bronchiseptica (bacteria)

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