circular flagellin

Circular flagellin refers to a form of the protein building block that makes up bacterial flagella, the tail-like structures bacteria use for movement. In this form, the protein's ends are linked, creating a continuous, ring-shaped molecule. This circular arrangement enhances stability and resilience, protecting the flagellin from degradation and helping bacteria effectively propel themselves. The concept of circular flagellin is significant in microbiology because it influences how bacteria move and survive, and it can also impact how the immune system recognizes and responds to bacterial infections.