>TIGR00207 fliG flagellar motor switch protein FliG; InterPro: IPR000090 The flagellar motor switch in Escherichia coli and Salmonella typhimurium regulates the direction of flagellar rotation and hence controls swimming behaviour . The switch is a complex apparatus that responds to signals transduced by the chemotaxis sensory signalling system during chemotactic behaviour . CheY, the chemotaxis response regulator, is believed to act directly on the switch to induce tumbles in the swimming pattern, but no physical interactions of CheY and switch proteins have yet been demonstrated. The switch complex comprises at least three proteins - FliG, FliM and FliN. It has been shown that FliG interacts with FliM, FliM interacts with itself, and FliM interacts with FliN . Several residues within the middle third of FliG appear to be strongly involved in the FliG-FliM interaction, with residues near the N- or C-termini being less important . Such clustering suggests that FliG-FliM interaction plays a central role in switching. Analysis of the FliG, FliM and FliN sequences shows that none are especially hydrophobic or appear to be integral membrane proteins . This result is consistent with other evidence suggesting that the proteins may be peripheral to the membrane, possibly mounted on the basal body M ring , . FliG is present in about 25 copies per flagellum. This structure of the C-terminal domain is known, this domain functions specifically in motor rotation .; GO: 0003774 motor activity, 0001539 ciliary or flagellar motility, 0006935 chemotaxis, 0009288 flagellin-based flagellum.

Probab=97.34  E-value=0.00087  Score=43.30  Aligned_cols=63  Identities=21%  Similarity=0.263  Sum_probs=58.7

Q ss_pred             HHHHHHHCCHHHHHHHHHHCCHHHHHHHHHHCCHHHHHHHHHHCCHHHHHHHHHHHHCCCCCH
Q ss_conf             999995199899999996379899999997299899999996299999999999995271121
Q gi|254780375|r  107 ILDIYKKMDSDSAALQLEQIDPDISSHILMRLSPRQSSLIMSKMNPKSATMITNVVANMLKFK  169 (175)
Q Consensus       107 lv~iy~~M~p~~AA~il~~m~~d~aa~iL~~m~~~~~a~IL~~M~p~~Aa~it~~la~~~~~~  169 (175)
T Consensus       118 ~f~~~~~~~P~~~~dfI~~EHPQtiAlIL~hL~~~~Aa~iLs~l~~e~~~~v~~RiA~~g~~s  180 (346)
T TIGR00207       118 GFEFLRKAEPQQIADFIQQEHPQTIALILSHLDPAQAAEILSLLPEEVQAEVARRIAVMGRTS  180 (346)
T ss_pred             CHHHHHCCCHHHHHHHHHCCCHHHHHHHHHHHCHHHHHHHHHCCCHHHHHHHHHHHHHCCCCC
T ss_conf             156763158688998775058679999998518304788873068568999999998507867