FliG

• Description: flagellar motor switch protein
  
  

Gene name	fliG
Synonyms	flaA15
Essential	no
Product	flagellar motor switch protein
Function	movement and chemotaxis
MW, pI	38 kDa, 4.46
Gene length, protein length	1014 bp, 338 aa
Immediate neighbours	fliF, fliH
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

The gene

Basic information

• Locus tag: BSU16220

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

Categories containing this gene/protein

motility and chemotaxis, membrane proteins

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: fliG family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity: interaction with EpsE prevents energetization of the flagellum by MotA-MotB PubMed

• Interactions: EpsE-FliG PubMed

• Localization: cell membrane (according to Swiss-Prot)

Database entries

• Structure:

• UniProt: P23448

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: flgB-flgC-fliE-fliF-fliG-fliH-fliI-fliJ-ylxF-fliK-ylxG-flgE-fliL-fliM-fliY-cheY-fliZ-fliP-fliQ-fliR-flhB-flhA-flhF-ylxH-cheB-cheA-cheW-cheC-cheD-sigD-swrB PubMed

• Sigma factor: SigA PubMed, SigD PubMed

• Regulation:
  • repressed under conditions that trigger sporulation (Spo0A) PubMed

• Regulatory mechanism:
  • Spo0A: transcription repression PubMed
  • CodY: transcription repression PubMed
  • DegU (non-phosphorylated): transcription activation PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Kris M Blair, Linda Turner, Jared T Winkelman, Howard C Berg, Daniel B Kearns
A molecular clutch disables flagella in the Bacillus subtilis biofilm.
Science: 2008, 320(5883);1636-8
[PubMed:18566286] [WorldCat.org] [DOI] (I p)

Kazuo Kobayashi
Gradual activation of the response regulator DegU controls serial expression of genes for flagellum formation and biofilm formation in Bacillus subtilis.
Mol Microbiol: 2007, 66(2);395-409
[PubMed:17850253] [WorldCat.org] [DOI] (P p)

H Werhane, P Lopez, M Mendel, M Zimmer, G W Ordal, L M Márquez-Magaña
The last gene of the fla/che operon in Bacillus subtilis, ylxL, is required for maximal sigmaD function.
J Bacteriol: 2004, 186(12);4025-9
[PubMed:15175317] [WorldCat.org] [DOI] (P p)

Virginie Molle, Masaya Fujita, Shane T Jensen, Patrick Eichenberger, José E González-Pastor, Jun S Liu, Richard Losick
The Spo0A regulon of Bacillus subtilis.
Mol Microbiol: 2003, 50(5);1683-701
[PubMed:14651647] [WorldCat.org] [DOI] (P p)

W Estacio, S S Anna-Arriola, M Adedipe, L M Márquez-Magaña
Dual promoters are responsible for transcription initiation of the fla/che operon in Bacillus subtilis.
J Bacteriol: 1998, 180(14);3548-55
[PubMed:9657996] [WorldCat.org] [DOI] (P p)

L M Márquez-Magaña, M J Chamberlin
Characterization of the sigD transcription unit of Bacillus subtilis.
J Bacteriol: 1994, 176(8);2427-34
[PubMed:8157612] [WorldCat.org] [DOI] (P p)

A R Zuberi, C Ying, D S Bischoff, G W Ordal
Gene-protein relationships in the flagellar hook-basal body complex of Bacillus subtilis: sequences of the flgB, flgC, flgG, fliE and fliF genes.
Gene: 1991, 101(1);23-31
[PubMed:1905667] [WorldCat.org] [DOI] (P p)