CggR

• Description: repressor of the glycolytic gapA operon
  
  

Gene name	cggR
Synonyms	yvbQ
Essential	no
Product	central glycolytic genes regulator
Function	transcriptional regulator
Metabolic function and regulation of this protein in SubtiPathways: Central C-metabolism
MW, pI	37,2 kDa,5.68
Gene length, protein length	1020 bp, 340 amino acids
Immediate neighbours	araE, gapA
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: BSU33950

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: transcription repression of the glycolytic gapA operon

• Protein family: sorC transcriptional regulatory family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:
  • DNA binding domain (H-T-H motif) (37–56)

• Modification:

• Cofactor(s):

• Effectors of protein activity: fructose 1.6-bisphosphate PubMed and dihydroxyacetone phosphate, glucose-6-phosphate and fructose-6-phosphate PubMed act as inducer and result in release of CggR from the DNA

• Interactions:

• Localization:

Database entries

• Structure: 2OKG ( effector binding domain), 3BXH (in complex with fructose-6-phosphate), complex with Fructose-6-Phosphate NCBI, effector binding domain NCBI

• UniProt: O32253

• KEGG entry: [3]

Expression and regulation

• Operon:
  • cggR-gapA-pgk-tpiA-pgm-eno
  • cggR-gapA

The primary mRNAs of the operon are highly unstable. The primary mRNA is subject to processing at the very end of the cggR open reading frame. This results in stable mature gapA and gapA-pgk-tpiA-pgm-eno mRNAs. The processing event requires the Rny protein.

• Sigma factor: SigA

• Regulation: expression activated by glucose (77 fold) PubMed, CggR represses the operon in the absence of glycolytic sugars PubMed

• Regulatory mechanism: repression

• Database entries: DBTBS

• Additional information:

Biological materials

• Mutant: GP311 (in frame deletion), available in Stülke lab

• Expression vector: pGP705 (N-terminal His-tag, in pWH844), available in Stülke lab

• lacZ fusion: pGP504 (in pAC7), pGP509 (in pAC6), available in Stülke lab

• GFP fusion:

• Antibody: available in Stülke lab

Labs working on this gene/protein

Stephane Aymerich, Microbiology and Molecular Genetics, INRA Paris-Grignon, France

References

Fabian M Commichau, Fabian M Rothe, Christina Herzberg, Eva Wagner, Daniel Hellwig, Martin Lehnik-Habrink, Elke Hammer, Uwe Völker, Jörg Stülke
Novel activities of glycolytic enzymes in Bacillus subtilis: interactions with essential proteins involved in mRNA processing.
Mol Cell Proteomics: 2009, 8(6);1350-60
[PubMed:19193632] [WorldCat.org] [DOI] (I p)

Pavlína Rezácová, Milan Kozísek, Shiu F Moy, Irena Sieglová, Andrzej Joachimiak, Mischa Machius, Zbyszek Otwinowski
Crystal structures of the effector-binding domain of repressor Central glycolytic gene Regulator from Bacillus subtilis reveal ligand-induced structural changes upon binding of several glycolytic intermediates.
Mol Microbiol: 2008, 69(4);895-910
[PubMed:18554327] [WorldCat.org] [DOI] (I p)

Thierry Doan, Laetitia Martin, Silvia Zorrilla, Denis Chaix, Stéphane Aymerich, Gilles Labesse, Nathalie Declerck
A phospho-sugar binding domain homologous to NagB enzymes regulates the activity of the central glycolytic genes repressor.
Proteins: 2008, 71(4);2038-50
[PubMed:18186488] [WorldCat.org] [DOI] (I p)

Silvia Zorrilla, Denis Chaix, Alvaro Ortega, Carlos Alfonso, Thierry Doan, Emmanuel Margeat, Germán Rivas, Stephan Aymerich, Nathalie Declerck, Catherine A Royer
Fructose-1,6-bisphosphate acts both as an inducer and as a structural cofactor of the central glycolytic genes repressor (CggR).
Biochemistry: 2007, 46(51);14996-5008
[PubMed:18052209] [WorldCat.org] [DOI] (P p)

Silvia Zorrilla, Thierry Doan, Carlos Alfonso, Emmanuel Margeat, Alvaro Ortega, Germán Rivas, Stéphane Aymerich, Catherine A Royer, Nathalie Declerck
Inducer-modulated cooperative binding of the tetrameric CggR repressor to operator DNA.
Biophys J: 2007, 92(9);3215-27
[PubMed:17293407] [WorldCat.org] [DOI] (P p)

Hans-Matti Blencke, Georg Homuth, Holger Ludwig, Ulrike Mäder, Michael Hecker, Jörg Stülke
Transcriptional profiling of gene expression in response to glucose in Bacillus subtilis: regulation of the central metabolic pathways.
Metab Eng: 2003, 5(2);133-49
[PubMed:12850135] [WorldCat.org] [DOI] (P p)

Christoph Meinken, Hans-Matti Blencke, Holger Ludwig, Jörg Stülke
Expression of the glycolytic gapA operon in Bacillus subtilis: differential syntheses of proteins encoded by the operon.
Microbiology (Reading): 2003, 149(Pt 3);751-761
[PubMed:12634343] [WorldCat.org] [DOI] (P p)

Thierry Doan, Stéphane Aymerich
Regulation of the central glycolytic genes in Bacillus subtilis: binding of the repressor CggR to its single DNA target sequence is modulated by fructose-1,6-bisphosphate.
Mol Microbiol: 2003, 47(6);1709-21
[PubMed:12622823] [WorldCat.org] [DOI] (P p)

Holger Ludwig, Nicole Rebhan, Hans-Matti Blencke, Matthias Merzbacher, Jörg Stülke
Control of the glycolytic gapA operon by the catabolite control protein A in Bacillus subtilis: a novel mechanism of CcpA-mediated regulation.
Mol Microbiol: 2002, 45(2);543-53
[PubMed:12123463] [WorldCat.org] [DOI] (P p)

H Ludwig, G Homuth, M Schmalisch, F M Dyka, M Hecker, J Stülke
Transcription of glycolytic genes and operons in Bacillus subtilis: evidence for the presence of multiple levels of control of the gapA operon.
Mol Microbiol: 2001, 41(2);409-22
[PubMed:11489127] [WorldCat.org] [DOI] (P p)

S Fillinger, S Boschi-Muller, S Azza, E Dervyn, G Branlant, S Aymerich
Two glyceraldehyde-3-phosphate dehydrogenases with opposite physiological roles in a nonphotosynthetic bacterium.
J Biol Chem: 2000, 275(19);14031-7
[PubMed:10799476] [WorldCat.org] [DOI] (P p)