flagellin

noun

fla·​gel·​lin flə-ˈje-lən How to pronounce flagellin (audio)
: a polymeric protein that is the chief constituent of bacterial flagella and that determines the specificity of the flagellum in eliciting an immune response

Word History

Etymology

flagellum + -in entry 1

First Known Use

1955, in the meaning defined above

Time Traveler
The first known use of flagellin was in 1955

Dictionary Entries Near flagellin

Cite this Entry

“Flagellin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flagellin. Accessed 29 Sep. 2023.

Medical Definition

flagellin

noun
fla·​gel·​lin flə-ˈjel-ən How to pronounce flagellin (audio)
: a polymeric protein that is the chief constituent of bacterial flagella, that forms helical chains around the hollow core of the flagellar filament, that determines the specificity of the flagellum in eliciting an immune response by its amino acid sequence, and that within any one serogroup can vary between two antigenic states by switching between the expression of two different genes

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