Difference between revisions of "CheB"

From SubtiWiki
Jump to: navigation, search
(Expression and regulation)
Line 109: Line 109:
  
 
=Expression and regulation=
 
=Expression and regulation=
* '''Operon:'''  
+
* '''Operon:''' part of the [[fla-che 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|9657996,8157612,15175317}}
 
** ''[[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|9657996,8157612,15175317}}
 
** ''[[ylxF]]-[[fliK]]-[[flgD]]-[[flgE]]-[[fliL]]-[[fliM]]-[[fliY]]-[[cheY]]-[[fliZ]]-[[fliP]]-[[fliQ]]-[[fliR]]-[[flhB]]-[[flhA]]-[[flhF]]-[[flhG]]-[[cheB]]-[[cheA]]-[[cheW]]-[[cheC]]-[[cheD]]-[[sigD]]-[[swrB]]'' {{PubMed|20233303}}
 
** ''[[ylxF]]-[[fliK]]-[[flgD]]-[[flgE]]-[[fliL]]-[[fliM]]-[[fliY]]-[[cheY]]-[[fliZ]]-[[fliP]]-[[fliQ]]-[[fliR]]-[[flhB]]-[[flhA]]-[[flhF]]-[[flhG]]-[[cheB]]-[[cheA]]-[[cheW]]-[[cheC]]-[[cheD]]-[[sigD]]-[[swrB]]'' {{PubMed|20233303}}
Line 119: Line 119:
 
** ''[[ylxF]]'': [[SigD]] {{PubMed|20233303}}
 
** ''[[ylxF]]'': [[SigD]] {{PubMed|20233303}}
  
* '''Regulation:'''  
+
* '''Regulation:''' see [[fla-che operon]]
** repressed under conditions that trigger sporulation ([[Spo0A]]) {{PubMed|14651647}}
 
  
* '''Regulatory mechanism:'''  
+
* '''Regulatory mechanism:''' see [[fla-che operon]]
** [[Spo0A]]: transcription repression {{PubMed|14651647}}
 
** [[CodY]]: transcription repression {{PubMed|12730172}}
 
** [[DegU]] (non-phosphorylated): transcription activation {{PubMed|17850253}}
 
** [[DegU]]-P: transcription repression {{PubMed|24386445}}
 
** [[DegU]]-P in complex with [[SwrA]]: transcription activation {{PubMed|24386445}}
 
  
 
* '''Additional information:'''
 
* '''Additional information:'''

Revision as of 14:17, 12 February 2015

  • 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
CheB context.gif
This image was kindly provided by SubtiList
Expression at a glance   PubMed
CheB expression.png















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

Phenotypes of a mutant

Database entries

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

Additional information

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:

Database entries

  • Structure:
  • KEGG entry: [3]

Additional information

Expression and regulation

  • 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:

Labs working on this gene/protein

Your additional remarks

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