Protein Domain : Flagellar P-ring protein IPR001782

Type	Family
Description	The flgH, flgI and fliF genes of Salmonella typhimurium encode the major proteins for the L, P and M rings of the flagellar basal body [ ]. In fact, the basal body consists of four rings (L,P,S and M) surrounding the flagellar rod, which is believed to transmit motor rotation to the filament [ ]. The M ring is integral to the inner membrane of the cell, and may be connected to the rod via the S (supramembrane) ring, which lies just distal to it. The L and P rings reside in the outer membrane and periplasmic space, respectively.The sequences of the FlgH, FlgI and FliF gene products have been determined [ ]. FlgH and FlgI, which are exported across the cell membrane to their destinations in the outer membrane and periplasmic space, have typical N-terminal cleaved signal-peptide sequences [, ]. FlgH is predicted to have an extensive β-sheet structure, in keeping with other outer membrane proteins, and FlgI is thought to have even more β-structure content []. Several aspects of the DNA sequence of these genes and their surrounds suggest complex regulation of the flagellar gene system.
Short Name	Flag_FlgI