P ring

{{short description|Part of certain bacteria}}

The P ring forms part of the basal body of the bacterial appendage known as the flagellum. It is known to be embedded in the peptidoglycan cell wall.{{cite book|author=Larry Barton|title=Structural and Functional Relationships in Prokaryotes|url=https://archive.org/details/Structural_and_Functional_Relationships_in_Prokaryotes_by_Larry_Barton|year=2005|publisher=Springer Science & Business Media|isbn=978-0-387-20708-7|page=[https://archive.org/details/Structural_and_Functional_Relationships_in_Prokaryotes_by_Larry_Barton/page/n270 243]}} Together with the L ring, it has the function of anchoring the flagellum to the cell surface.{{cite book|author=Moselio Schaechter|title=Desk Encyclopedia of Microbiology|url=https://books.google.com/books?id=vO0oU4z36DIC&pg=PA532|year=2010|publisher=Academic Press|isbn=978-0-08-096128-6|page=532}}