Article · Wikipedia archive · Last revised Jun 21, 2026

L ring

The L-ring of the bacterial flagellum is the ring in the lipid outer cell membrane through which the axial filament passes. The L in L-ring stands for lipopolysaccharide.

Last revised

Jun 21, 2026

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≈ 1 min

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Source

A diagram of a bacterial flagellum source ↗

The L-ring of the bacterial flagellum is the ring in the lipid outer cell membrane through which the axial filament (rod, hook, and flagellum) passes.¹ The L in L-ring stands for lipopolysaccharide.

References

References

Jones CJ, Homma M, Macnab RM (July 1989). "L-, P-, and M-ring proteins of the flagellar basal body of Salmonella typhimurium: gene sequences and deduced protein sequences". J Bacteriol. 171 (7): 3890–3900. doi:10.1128/jb.171.7.3890-3900.1989. PMC 210140. PMID 2544561.