The flagellum is often cited as an example of natural design ingenuity -- it is a powerful nanomachine that allows bacteria to swim effortlessly in search of food. Yet despite being a popular object ...
The filament is a helical tubular assembly of a single protein, FliC or flagellin, with a diameter of 10–20 nm, and a few tens of thousands of subunits build a helical propeller that grows up to 10–15 ...