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  • Description: branched-chain amino acid aminotransferase

Gene name ywaA
Synonyms ipa-0r
Essential no
Product branched-chain amino acid aminotransferase
Function biosynthesis of branched-chain amino acids
Gene expression levels in SubtiExpress: ywaA
Metabolic function and regulation of this protein in SubtiPathways:
MW, pI 40 kDa, 4.952
Gene length, protein length 1089 bp, 363 aa
Immediate neighbours dltE, licH
Sequences Protein DNA DNA_with_flanks
Genetic context
YwaA context.gif
This image was kindly provided by SubtiList
Expression at a glance   PubMed
YwaA expression.png

Categories containing this gene/protein

biosynthesis/ acquisition of amino acids, most abundant proteins

This gene is a member of the following regulons

CodY regulon

The gene

Basic information

  • Locus tag: BSU38550

Phenotypes of a mutant

Database entries

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

Additional information

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity: L-leucine + 2-oxoglutarate = 4-methyl-2-oxopentanoate + L-glutamate (according to Swiss-Prot)
  • Protein family: class-IV pyridoxal-phosphate-dependent aminotransferase family (according to Swiss-Prot)
  • Paralogous protein(s): YbgE

Extended information on the protein

  • Kinetic information:
  • Modification: S-cysteinylation after diamide stress (C104) PubMed
  • Effectors of protein activity:

Database entries

  • Structure: 3HT5 (from Mycobacterium tuberculosis, 42% identity, 58% similarity) PubMed
  • KEGG entry: [3]

Additional information

Expression and regulation

  • Regulation:
    • repressed during growth in the presence of branched chain amino acids (CodY) PubMed
  • Regulatory mechanism:

Biological materials

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

Labs working on this gene/protein

Your additional remarks


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)

Falko Hochgräfe, Jörg Mostertz, Dierk-Christoph Pöther, Dörte Becher, John D Helmann, Michael Hecker
S-cysteinylation is a general mechanism for thiol protection of Bacillus subtilis proteins after oxidative stress.
J Biol Chem: 2007, 282(36);25981-5
[PubMed:17611193] [WorldCat.org] [DOI] (P p)

Christine Eymann, Annette Dreisbach, Dirk Albrecht, Jörg Bernhardt, Dörte Becher, Sandy Gentner, Le Thi Tam, Knut Büttner, Gerrit Buurman, Christian Scharf, Simone Venz, Uwe Völker, Michael Hecker
A comprehensive proteome map of growing Bacillus subtilis cells.
Proteomics: 2004, 4(10);2849-76
[PubMed:15378759] [WorldCat.org] [DOI] (P p)

Bradley J Berger, Shane English, Gene Chan, Marvin H Knodel
Methionine regeneration and aminotransferases in Bacillus subtilis, Bacillus cereus, and Bacillus anthracis.
J Bacteriol: 2003, 185(8);2418-31
[PubMed:12670965] [WorldCat.org] [DOI] (P p)