Hag

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  • Description: flagellin protein

Gene name hag
Synonyms
Essential no
Product flagellin protein
Function motility and chemotaxis
Interactions involving this protein in SubtInteract: Hag
MW, pI 32 kDa, 4.782
Gene length, protein length 912 bp, 304 aa
Immediate neighbours yvyC, csrA
Get the DNA and protein sequences
(Barbe et al., 2009)
Genetic context
Hag context.gif
This image was kindly provided by SubtiList



Categories containing this gene/protein

motility and chemotaxis

This gene is a member of the following regulons

CodY regulon, CsrA regulon, ScoC regulon, SigD regulon

The gene

Basic information

  • Locus tag: BSU35360

Phenotypes of a mutant

No swarming motility on B medium. PubMed

Database entries

  • DBTBS entry: [1]
  • SubtiList entry: [2]

Additional information

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity:
  • Protein family: bacterial flagellin family (according to Swiss-Prot)
  • Paralogous protein(s): YvzB (C-terminal domain of Hag)

Extended information on the protein

  • Kinetic information:
  • Domains:
  • Modification:
  • Cofactor(s):
  • Effectors of protein activity:

Database entries

  • Structure:
  • KEGG entry: [3]
  • E.C. number:

Additional information

Expression and regulation

  • Regulation:
    • repressed during growth in the presence of branched chain amino acids (CodY) PubMed
  • Additional information:
    • the hag gene is strongly overexpressed in a ymdB mutant (loss of bistable gene expression) PubMed

Biological materials

  • Mutant: GP901 (aphA3), GP902 (tet), both available in Stülke lab
  • Expression vector:
  • lacZ fusion: pGP1035 (in pAC6), pGP755 (in pAC7), there is also a series of promoter deletion variants in pAC6 and pAC7, all available in Stülke lab
  • GFP fusion:
  • two-hybrid system:
  • Antibody:

Labs working on this gene/protein

Your additional remarks

References

Additional publications: PubMed

Diethmaier C, Pietack N, Gunka K, Wrede C, Lehnik-Habrink M, Herzberg C, Hübner S, Stülke J  
A Novel Factor Controlling Bistability in Bacillus subtilis: The YmdB Protein Affects
Flagellin Expression and Biofilm Formation. 
J Bacteriol.: 2011, 193(21):5997-6007. 
PubMed:21856853

Sampriti Mukherjee, Helen Yakhnin, Dave Kysela, Josh Sokoloski, Paul Babitzke, Daniel B Kearns
CsrA-FliW interaction governs flagellin homeostasis and a checkpoint on flagellar morphogenesis in Bacillus subtilis.
Mol Microbiol: 2011, 82(2);447-61
[PubMed:21895793] [WorldCat.org] [DOI] (I p)

Kassem Hamze, Daria Julkowska, Sabine Autret, Krzysztof Hinc, Krzysztofa Nagorska, Agnieszka Sekowska, I Barry Holland, Simone J Séror
Identification of genes required for different stages of dendritic swarming in Bacillus subtilis, with a novel role for phrC.
Microbiology (Reading): 2009, 155(Pt 2);398-412
[PubMed:19202088] [WorldCat.org] [DOI] (P p)

Hannes Hahne, Susanne Wolff, Michael Hecker, Dörte Becher
From complementarity to comprehensiveness--targeting the membrane proteome of growing Bacillus subtilis by divergent approaches.
Proteomics: 2008, 8(19);4123-36
[PubMed:18763711] [WorldCat.org] [DOI] (I p)

D B Mirel, W F Estacio, M Mathieu, E Olmsted, J Ramirez, L M Márquez-Magaña
Environmental regulation of Bacillus subtilis sigma(D)-dependent gene expression.
J Bacteriol: 2000, 182(11);3055-62
[PubMed:10809682] [WorldCat.org] [DOI] (P p)

T Caramori, A Galizzi
The UP element of the promoter for the flagellin gene, hag, stimulates transcription from both SigD- and SigA-dependent promoters in Bacillus subtilis.
Mol Gen Genet: 1998, 258(4);385-8
[PubMed:9648743] [WorldCat.org] [DOI] (P p)

Y F Chen, J D Helmann
DNA-melting at the Bacillus subtilis flagellin promoter nucleates near -10 and expands unidirectionally.
J Mol Biol: 1997, 267(1);47-59
[PubMed:9096206] [WorldCat.org] [DOI] (P p)

K Fredrick, T Caramori, Y F Chen, A Galizzi, J D Helmann
Promoter architecture in the flagellar regulon of Bacillus subtilis: high-level expression of flagellin by the sigma D RNA polymerase requires an upstream promoter element.
Proc Natl Acad Sci U S A: 1995, 92(7);2582-6
[PubMed:7708689] [WorldCat.org] [DOI] (P p)

D B Mirel, M J Chamberlin
The Bacillus subtilis flagellin gene (hag) is transcribed by the sigma 28 form of RNA polymerase.
J Bacteriol: 1989, 171(6);3095-101
[PubMed:2498284] [WorldCat.org] [DOI] (P p)