Difference between revisions of "LeuB"

From SubtiWiki
Jump to: navigation, search
Line 95: Line 95:
  
 
* '''Regulation:''' repressed by casamino acids [http://www.ncbi.nlm.nih.gov/pubmed/12107147 PubMed] ,  expressed in the absence of branched-chain amino acids (BCAA), expression is stimulated in the presence of glucose [http://www.ncbi.nlm.nih.gov/sites/entrez/12193635 PubMed], repressed by [[CodY]] [http://www.ncbi.nlm.nih.gov/sites/entrez/12618455 PubMed]
 
* '''Regulation:''' repressed by casamino acids [http://www.ncbi.nlm.nih.gov/pubmed/12107147 PubMed] ,  expressed in the absence of branched-chain amino acids (BCAA), expression is stimulated in the presence of glucose [http://www.ncbi.nlm.nih.gov/sites/entrez/12193635 PubMed], repressed by [[CodY]] [http://www.ncbi.nlm.nih.gov/sites/entrez/12618455 PubMed]
 +
** repressed in the absence of good nitrogen sources (glutamine or ammonium) ([[TnrA]]) [http://www.ncbi.nlm.nih.gov/sites/entrez/15547269 PubMed]
 
** repressed during growth in the presence of branched chain amino acids ([[CodY]]) [http://www.ncbi.nlm.nih.gov/sites/entrez/12618455 PubMed]
 
** repressed during growth in the presence of branched chain amino acids ([[CodY]]) [http://www.ncbi.nlm.nih.gov/sites/entrez/12618455 PubMed]
  
 
* '''Regulatory mechanism:''' [[CodY]]: transcription repression [http://www.ncbi.nlm.nih.gov/sites/entrez/12618455 PubMed], glucose regulation: [[CcpA]] [http://www.ncbi.nlm.nih.gov/sites/entrez/12193635 PubMed], repression by BCAA: tRNA-controlled RNA switch (T-box) that mediates termination/antitermination
 
* '''Regulatory mechanism:''' [[CodY]]: transcription repression [http://www.ncbi.nlm.nih.gov/sites/entrez/12618455 PubMed], glucose regulation: [[CcpA]] [http://www.ncbi.nlm.nih.gov/sites/entrez/12193635 PubMed], repression by BCAA: tRNA-controlled RNA switch (T-box) that mediates termination/antitermination
 +
** [[TnrA]]: transcription repression [http://www.ncbi.nlm.nih.gov/sites/entrez/15547269 PubMed]
 
** [[CodY]]: transcription repression [http://www.ncbi.nlm.nih.gov/sites/entrez/12618455 PubMed]
 
** [[CodY]]: transcription repression [http://www.ncbi.nlm.nih.gov/sites/entrez/12618455 PubMed]
  

Revision as of 17:46, 11 June 2009

  • Description: 3-isopropylmalate dehydrogenase

Gene name leuB
Synonyms leuC
Essential no
Product 3-isopropylmalate dehydrogenase
Function biosynthesis of leucine
MW, pI 39 kDa, 4.744
Gene length, protein length 1095 bp, 365 aa
Immediate neighbours leuC, leuA
Get the DNA and protein sequences
(Barbe et al., 2009)
Genetic context
LeuB context.gif
This image was kindly provided by SubtiList



The gene

Basic information

  • Locus tag: BSU28270

Phenotypes of a mutant

Database entries

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

Additional information

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity: (2R,3S)-3-isopropylmalate + NAD+ = 4-methyl-2-oxopentanoate + CO2 + NADH (according to Swiss-Prot)
  • Protein family: LeuB type 1 subfamily (according to Swiss-Prot)
  • Paralogous protein(s):

Extended information on the protein

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

Database entries

  • Structure: 1XAD (Thermus thermophilus)
  • KEGG entry: [3]

Additional information

Expression and regulation

  • Regulation: repressed by casamino acids PubMed , expressed in the absence of branched-chain amino acids (BCAA), expression is stimulated in the presence of glucose PubMed, repressed by CodY PubMed
    • repressed in the absence of good nitrogen sources (glutamine or ammonium) (TnrA) PubMed
    • repressed during growth in the presence of branched chain amino acids (CodY) PubMed
  • Regulatory mechanism: CodY: transcription repression PubMed, glucose regulation: CcpA PubMed, repression by BCAA: tRNA-controlled RNA switch (T-box) that mediates termination/antitermination
  • Additional information:

Biological materials

  • Mutant:
  • Expression vector:
  • lacZ fusion:
  • GFP fusion:
  • two-hybrid system:
  • Antibody:

Labs working on this gene/protein

Your additional remarks

References

Ulrike Mäder, Georg Homuth, Christian Scharf, Knut Büttner, Rüdiger Bode, Michael Hecker
Transcriptome and proteome analysis of Bacillus subtilis gene expression modulated by amino acid availability.
J Bacteriol: 2002, 184(15);4288-95
[PubMed:12107147] [WorldCat.org] [DOI] (P p)

  1. Mäder et al. (2002) Transcriptome and Proteome Analysis of Bacillus subtilis Gene Expression Modulated by Amino Acid Availability. J. Bacteriol 184: 1844288-4295 PubMed
  2. Author1, Author2 & Author3 (year) Title Journal volume: page-page. PubMed