FliO is an evolutionarily conserved yet diversified core component of the bacterial flagellar type III secretion system
Ekaterina P. Andrianova, Amanda Lee Dobbins, Marc Erhardt…·Igor B. Zhulin
This study identifies FliO as a nearly ubiquitous and ancestral core component of the bacterial flagellar type III secretion system, showing structural diversity and functional repurposing across bacterial species.