IlvA

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  • Description: threonine dehydratase

Gene name ilvA
Synonyms
Essential no
Product threonine dehydratase
Function biosynthesis of branched-chain amino acids
Gene expression levels in SubtiExpress: ilvA
Metabolic function and regulation of this protein in SubtiPathways:
ilvA
MW, pI 46 kDa, 5.538
Gene length, protein length 1266 bp, 422 aa
Immediate neighbours ypmP, yplP
Sequences Protein DNA DNA_with_flanks
Genetic context
IlvA context.gif
This image was kindly provided by SubtiList
Expression at a glance   PubMed
IlvA expression.png















Categories containing this gene/protein

biosynthesis/ acquisition of amino acids

This gene is a member of the following regulons

CodY regulon

The gene

Basic information

  • Locus tag: BSU21770

Phenotypes of a mutant

Database entries

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

Additional information

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity: L-threonine = 2-oxobutanoate + NH3 (according to Swiss-Prot)
  • Protein family: ccmF/cycK/ccl1/nrfE/ccsA family (according to Swiss-Prot)
  • Paralogous protein(s):

Extended information on the protein

  • Kinetic information:
  • Modification:
  • Effectors of protein activity:

Database entries

  • Structure:
  • KEGG entry: [3]

Additional information

  • subject to Clp-dependent proteolysis upon glucose starvation PubMed

Expression and regulation

  • Sigma factor:
  • Regulation:
    • repressed during growth in the presence of branched chain amino acids (CodY) PubMed
  • Regulatory mechanism:
  • Additional information: subject to Clp-dependent proteolysis upon glucose starvation PubMed
    • number of protein molecules per cell (minimal medium with glucose and ammonium): 969 PubMed
    • number of protein molecules per cell (complex medium with amino acids, without glucose): 1777 PubMed

Biological materials

  • Mutant:
  • Expression vector:
  • lacZ fusion: pGP519 (in pAC5), available in Stülke lab
  • GFP fusion:
  • two-hybrid system:
  • Antibody:

Labs working on this gene/protein

Your additional remarks

References

Allison Kriel, Shaun R Brinsmade, Jessica L Tse, Ashley K Tehranchi, Alycia N Bittner, Abraham L Sonenshein, Jue D Wang
GTP dysregulation in Bacillus subtilis cells lacking (p)ppGpp results in phenotypic amino acid auxotrophy and failure to adapt to nutrient downshift and regulate biosynthesis genes.
J Bacteriol: 2014, 196(1);189-201
[PubMed:24163341] [WorldCat.org] [DOI] (I p)

Boris R Belitsky, Abraham L Sonenshein
Genetic and biochemical analysis of CodY-binding sites in Bacillus subtilis.
J Bacteriol: 2008, 190(4);1224-36
[PubMed:18083814] [WorldCat.org] [DOI] (I p)

Ulrike Mäder, Susanne Hennig, Michael Hecker, Georg Homuth
Transcriptional organization and posttranscriptional regulation of the Bacillus subtilis branched-chain amino acid biosynthesis genes.
J Bacteriol: 2004, 186(8);2240-52
[PubMed:15060025] [WorldCat.org] [DOI] (P p)

Virginie Molle, Yoshiko Nakaura, Robert P Shivers, Hirotake Yamaguchi, Richard Losick, Yasutaro Fujita, Abraham L Sonenshein
Additional targets of the Bacillus subtilis global regulator CodY identified by chromatin immunoprecipitation and genome-wide transcript analysis.
J Bacteriol: 2003, 185(6);1911-22
[PubMed:12618455] [WorldCat.org] [DOI] (P p)

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)