P ring explained

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.^[1] Together with the L ring, it has the function of anchoring the flagellum to the cell surface.^[2]

Notes and References

1. Book: Larry Barton. Structural and Functional Relationships in Prokaryotes. 2005. Springer Science & Business Media. 978-0-387-20708-7. 243.
2. Book: Moselio Schaechter. Desk Encyclopedia of Microbiology. 2010. Academic Press. 978-0-08-096128-6. 532.