GabT

• Description: gamma-aminobutyrate transaminase, general stress protein
  
  

Gene name	gabT
Synonyms	ycnG
Essential	no
Product	gamma-aminobutyrate transaminase
Function	utilization of gamma-amino butyric acid
Gene expression levels in SubtiExpress: gabT
MW, pI	47 kDa, 5.304
Gene length, protein length	1308 bp, 436 aa
Immediate neighbours	gabR, gabD
Sequences	Protein DNA DNA_with_flanks
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

utilization of amino acids

This gene is a member of the following regulons

GabR regulon

The gene

Basic information

• Locus tag: BSU03900

Phenotypes of a mutant

• • growth defect in the presence of gamma-aminobutyrate PubMed
  • no growth with gamma-aminobutyrate as single carbon source PubMed

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

Additional information

• the protein was reported to be involved in norspermidine production and biofilm disassembly PubMed; however, this is not the case PubMed

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:
  • 4-aminobutanoate + 2-oxoglutarate = succinate semialdehyde + L-glutamate (according to Swiss-Prot)
  • the protein was reported to be involved in norspermidine production and biofilm disassembly PubMed; however, this is not the case PubMed
• Protein family: class-III pyridoxal-phosphate-dependent aminotransferase family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactors:

• Effectors of protein activity:

• Interactions:

• Localization:

Database entries

• Structure:

• UniProt: P94427

• KEGG entry: [3]

• E.C. number: 2.6.1.19

Expression and regulation

• Operon: gabT-gabD PubMed

• Expression browser: gabT PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • expressed in the presence of gamma-butyric acid and pyridoxal 5'-phosphate (GabR) PubMed

• Regulatory mechanism:
  • GabR: transcription activation PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

Linc Sonenshein, Tufts University, Boston, MA, USA Homepage

References

Laura Hobley, Sok Ho Kim, Yukari Maezato, Susan Wyllie, Alan H Fairlamb, Nicola R Stanley-Wall, Anthony J Michael
Norspermidine is not a self-produced trigger for biofilm disassembly.
Cell: 2014, 156(4);844-54
[PubMed:24529384] [WorldCat.org] [DOI] (I p)

Ilana Kolodkin-Gal, Shugeng Cao, Liraz Chai, Thomas Böttcher, Roberto Kolter, Jon Clardy, Richard Losick
A self-produced trigger for biofilm disassembly that targets exopolysaccharide.
Cell: 2012, 149(3);684-92
[PubMed:22541437] [WorldCat.org] [DOI] (I p)

Boris R Belitsky
Bacillus subtilis GabR, a protein with DNA-binding and aminotransferase domains, is a PLP-dependent transcriptional regulator.
J Mol Biol: 2004, 340(4);655-64
[PubMed:15223311] [WorldCat.org] [DOI] (P p)

Boris R Belitsky, Abraham L Sonenshein
GabR, a member of a novel protein family, regulates the utilization of gamma-aminobutyrate in Bacillus subtilis.
Mol Microbiol: 2002, 45(2);569-83
[PubMed:12123465] [WorldCat.org] [DOI] (P p)

S Dover, Y S Halpern
Genetic analysis of the gamma-aminobutyrate utilization pathway in Escherichia coli K-12.
J Bacteriol: 1974, 117(2);494-501
[PubMed:4590473] [WorldCat.org] [DOI] (P p)