For various reasons, it appears that the flagellum was an ancestor of the type-3 secretory system (T3SS), not the other way around.
In fact, a paper in "Cell" argues that the T3SS and the flagellum are not ancestral:
Evolution News then goes on to quote an article in "Science" that proposes that the last common bacterial ancestor had a flagellum:
Blessings,
Lee
In fact, a paper in "Cell" argues that the T3SS and the flagellum are not ancestral:
Evolution News then goes on to quote an article in "Science" that proposes that the last common bacterial ancestor had a flagellum:
Blessings,
Lee
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