PdhA

• Description: pyruvate dehydrogenase (E1 alpha subunit)
  
  

Gene name	pdhA
Synonyms	aceA
Essential	yes
Product	pyruvate dehydrogenase (E1 alpha subunit)
Function	links glycolysis and TCA cycle
Metabolic function and regulation of this protein in SubtiPathways: Central C-metabolism
MW, pI	41 kDa, 5.837
Gene length, protein length	1113 bp, 371 aa
Immediate neighbours	ykyA, pdhB
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: BSU14580

Phenotypes of a mutant

• Essential PubMed

• pdhA is essential PubMed

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: Pyruvate + [dihydrolipoyllysine-residue acetyltransferase] lipoyllysine = [dihydrolipoyllysine-residue acetyltransferase] S-acetyldihydrolipoyllysine + CO₂ (according to Swiss-Prot)

• Protein family:

• Paralogous protein(s):

Extended information on the protein

• Kinetic information: Michaelis-Menten PubMed

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:
  • Inhibited thiamine 2-thiothiazolone diphosphate and NADH PubMed
  • Low sensibility to NADPH

• Interactions: PdhA-PdhB-PdhC-PdhD

• Localization:

Database entries

• Structure: 1W88 (E1 in complex with subunit binding domain of E2, Geobacillus stearothermophilus)

• Swiss prot entry: P21881

• KEGG entry: [3]

• E.C. number: 1.2.4.1

Expression and regulation

• Operon: pdhA-pdhB-pdhC-pdhD

• Sigma factor: SigA

• Regulation: expression activated by glucose (3.4) PubMed

• Regulatory mechanism:

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

Arthur Aronson, Purdue University, West Lafayette, USA homepage

References

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)

P N Lowe, J A Hodgson, R N Perham
Dual role of a single multienzyme complex in the oxidative decarboxylation of pyruvate and branched-chain 2-oxo acids in Bacillus subtilis.
Biochem J: 1983, 215(1);133-40
[PubMed:6414463] [WorldCat.org] [DOI] (P p)

1. Blencke, H.-M., Homuth, G., Ludwig, H., Mäder, U., Hecker, M. & Stülke, J. (2003) Transcriptional profiling of gene expression in response to glucose in Bacillus subtilis: regulation of the central metabolic pathways. Metab. Engn. 5: 133-149. PubMed
2. Author1, Author2 & Author3 (year) Title Journal volume: page-page. PubMed