The structural protein of bacterial flagella.
- The bacterial flagellum is composed of 11 protofilaments with each protofilament comprised of subunits of a single protein, flagellin.
- The hook and the filament are self-assembling helical polymers constructed from monomers of the protein flagellin.
- Scientists have now found that an enzyme produced by immune cells called neutrophils can chop up flagellin, the main protein in these tails.
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