CheB

• Description: MCP-glutamate methylesterase / two-component response regulator-like
  
  

Gene name	cheB
Synonyms	cheL
Essential	no
Product	MCP-glutamate methylesterase / two-component response regulator-like
Function	motility and chemotaxis
Interactions involving this protein in SubtInteract: CheB
MW, pI	38 kDa, 8.119
Gene length, protein length	1071 bp, 357 aa
Immediate neighbours	ylxH, cheA
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

Categories containing this gene/protein

motility and chemotaxis, phosphoproteins

This gene is a member of the following regulons

CodY regulon, SigD regulon, Spo0A regulon

The gene

Basic information

• Locus tag: BSU16420

Expression

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: Protein L-glutamate O(5)-methyl ester + H₂O = protein L-glutamate + methanol (according to Swiss-Prot)

• Protein family:

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification: phosphorylated on a Asp residue by CheA PubMed

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization:
  • cytoplasm (according to Swiss-Prot)

Database entries

• Structure:

• UniProt: Q05522

• KEGG entry: [3]

• E.C. number: 3.1.1.61

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
  • 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:
  • flgB: SigA PubMed, SigD PubMed
  • ylxF: 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:
  • in minimal medium, CheB is present with 2,100 +/- 400 molecules per cell PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Reviews

Gerald L Hazelbauer, Wing-Cheung Lai
Bacterial chemoreceptors: providing enhanced features to two-component signaling.
Curr Opin Microbiol: 2010, 13(2);124-32
[PubMed:20122866] [WorldCat.org] [DOI] (I p)

Original publications

Vincent J Cannistraro, George D Glekas, Christopher V Rao, George W Ordal
Cellular stoichiometry of the chemotaxis proteins in Bacillus subtilis.
J Bacteriol: 2011, 193(13);3220-7
[PubMed:21515776] [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)

Michael W Bunn, George W Ordal
Receptor conformational changes enhance methylesterase activity during chemotaxis by Bacillus subtilis.
Mol Microbiol: 2004, 51(3);721-8
[PubMed:14731274] [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)

Michael A Zimmer, Hendrik Szurmant, Michael M Saulmon, Marissa A Collins, Jason S Bant, George W Ordal
The role of heterologous receptors in McpB-mediated signalling in Bacillus subtilis chemotaxis.
Mol Microbiol: 2002, 45(2);555-68
[PubMed:12123464] [WorldCat.org] [DOI] (P p)

E Karatan, M M Saulmon, M W Bunn, G W Ordal
Phosphorylation of the response regulator CheV is required for adaptation to attractants during Bacillus subtilis chemotaxis.
J Biol Chem: 2001, 276(47);43618-26
[PubMed:11553614] [WorldCat.org] [DOI] (P p)

J R Kirby, T B Niewold, S Maloy, G W Ordal
CheB is required for behavioural responses to negative stimuli during chemotaxis in Bacillus subtilis.
Mol Microbiol: 2000, 35(1);44-57
[PubMed:10632876] [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)

D S Bischoff, G W Ordal
Sequence and characterization of Bacillus subtilis CheB, a homolog of Escherichia coli CheY, and its role in a different mechanism of chemotaxis.
J Biol Chem: 1991, 266(19);12301-5
[PubMed:1905718] [WorldCat.org] (P p)