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
Gene expression levels in SubtiExpress: cheB
Interactions involving this protein in SubtInteract: CheB
MW, pI	38 kDa, 8.119
Gene length, protein length	1071 bp, 357 aa
Immediate neighbours	flhG, cheA
Sequences	Protein DNA DNA_with_flanks
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

motility and chemotaxis, phosphoproteins

This gene is a member of the following regulons

CodY regulon, DegU regulon, SigD regulon, Spo0A regulon

The gene

Basic information

• Locus tag: BSU16420

Database entries

• BsubCyc: BSU16420

• 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

• BsubCyc: BSU16420

• 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-flgD-flgE-fliL-fliM-fliY-cheY-fliZ-fliP-fliQ-fliR-flhB-flhA-flhF-flhG-cheB-cheA-cheW-cheC-cheD-sigD-swrB PubMed
  • ylxF-fliK-flgD-flgE-fliL-fliM-fliY-cheY-fliZ-fliP-fliQ-fliR-flhB-flhA-flhF-flhG-cheB-cheA-cheW-cheC-cheD-sigD-swrB PubMed

• Expression browser: cheB 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
  • DegU-P: transcription repression PubMed
  • DegU-P in complex with SwrA: transcription activation PubMed

• Additional information:
  • in minimal medium, CheB is present with 2,100 +/- 400 molecules per cell PubMed
  • number of protein molecules per cell (minimal medium with glucose and ammonium): 92 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

Serena Mordini, Cecilia Osera, Simone Marini, Francesco Scavone, Riccardo Bellazzi, Alessandro Galizzi, Cinzia Calvio
The role of SwrA, DegU and P(D3) in fla/che expression in B. subtilis.
PLoS One: 2013, 8(12);e85065
[PubMed:24386445] [WorldCat.org] [DOI] (I e)

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)