>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=93.76  E-value=0.34  Score=26.97  Aligned_cols=66  Identities=21%  Similarity=0.353  Sum_probs=47.7

Q ss_pred             HHHHHHHHHCCHHHHHHHHHHCCHHHHHHHHHHCCHHHHHHH------HHHCCHHHHHHHHHHHHCCCCCHH
Q ss_conf             999999951998999999963798999999972998999999------962999999999999952711214
Q gi|254780375|r  105 KNILDIYKKMDSDSAALQLEQIDPDISSHILMRLSPRQSSLI------MSKMNPKSATMITNVVANMLKFKK  170 (175)
Q Consensus       105 ~~lv~iy~~M~p~~AA~il~~m~~d~aa~iL~~m~~~~~a~I------L~~M~p~~Aa~it~~la~~~~~~~  170 (175)
T Consensus       128 ~~~~dfI~~EHPQtiAlIL~hL~~~~Aa~iLs~l~~e~~~~v~~RiA~~g~~sP~vv~ev~~VLe~kL~s~~  199 (346)
T TIGR00207       128 QQIADFIQQEHPQTIALILSHLDPAQAAEILSLLPEEVQAEVARRIAVMGRTSPEVVKEVERVLEKKLESLT  199 (346)
T ss_pred             HHHHHHHHCCCHHHHHHHHHHHCHHHHHHHHHCCCHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHCCCC
T ss_conf             889987750586799999985183047888730685689999999985078678999999999977622442