Difference between revisions of "PdhB"

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|style="background:#ABCDEF;" align="center"|'''Function''' || links glycolysis and TCA cycle
 
|style="background:#ABCDEF;" align="center"|'''Function''' || links glycolysis and TCA cycle
 
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|colspan="2" style="background:#FAF8CC;" align="center"| '''Gene expression levels in [http://cellpublisher.gobics.de/subtiexpress/ ''Subti''Express]''': [http://cellpublisher.gobics.de/subtiexpress/bsu/BSU14590 pdhB]
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|colspan="2" style="background:#FAF8CC;" align="center"| '''Gene expression levels in [http://subtiwiki.uni-goettingen.de/apps/expression/ ''Subti''Express]''': [http://subtiwiki.uni-goettingen.de/apps/expression/expression.php?search=BSU14590 pdhB]
 
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|colspan="2" style="background:#FAF8CC;" align="center"| '''Interactions involving this protein in [http://cellpublisher.gobics.de/subtinteract/startpage/start/ ''Subt''Interact]''': [http://cellpublisher.gobics.de/subtinteract/interactionList/2/PdhB PdhB]
 
|colspan="2" style="background:#FAF8CC;" align="center"| '''Interactions involving this protein in [http://cellpublisher.gobics.de/subtinteract/startpage/start/ ''Subt''Interact]''': [http://cellpublisher.gobics.de/subtinteract/interactionList/2/PdhB PdhB]
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|style="background:#ABCDEF;" align="center"|'''Immediate neighbours''' || ''[[pdhA]]'', ''[[pdhC]]''
 
|style="background:#ABCDEF;" align="center"|'''Immediate neighbours''' || ''[[pdhA]]'', ''[[pdhC]]''
 
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|colspan="2" style="background:#FAF8CC;" align="center"|'''Get the DNA and protein [http://srs.ebi.ac.uk/srsbin/cgi-bin/wgetz?-e+&#91;EMBLCDS:CAB13332&#93;+-newId sequences] <br/> (Barbe ''et al.'', 2009)'''
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|style="background:#FAF8CC;" align="center"|'''Sequences'''||[http://bsubcyc.org/BSUB/sequence-aa?type=GENE&object=BSU14590 Protein] [http://bsubcyc.org/BSUB/sequence?type=GENE&object=BSU14590 DNA] [http://bsubcyc.org/BSUB/seq-selector?chromosome=CHROM-1&object=BSU14590 Advanced_DNA]
 
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|colspan="2" | '''Genetic context''' <br/> [[Image:pdhB_context.gif]]
 
|colspan="2" | '''Genetic context''' <br/> [[Image:pdhB_context.gif]]

Revision as of 12:43, 13 May 2013

  • Description: pyruvate dehydrogenase (E1 beta subunit)

Gene name pdhB
Synonyms
Essential no
Product pyruvate dehydrogenase (E1 beta subunit)
Function links glycolysis and TCA cycle
Gene expression levels in SubtiExpress: pdhB
Interactions involving this protein in SubtInteract: PdhB
Metabolic function and regulation of this protein in SubtiPathways:
Central C-metabolism
MW, pI 35 kDa, 4.547
Gene length, protein length 975 bp, 325 aa
Immediate neighbours pdhA, pdhC
Sequences Protein DNA Advanced_DNA
Genetic context
PdhB context.gif
This image was kindly provided by SubtiList
Expression at a glance   PubMed
PdhB expression.png




























Categories containing this gene/protein

carbon core metabolism, membrane proteins, phosphoproteins

This gene is a member of the following regulons

stringent response

The gene

Basic information

  • Locus tag: BSU14590

Phenotypes of a mutant

  • defects in sporulation and unable to grow on glucose as single carbon source PubMed

Database entries

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

Additional information

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: phosphorylation on (Ser-302 OR Ser-306) PubMed
  • Cofactor(s):
  • Effectors of protein activity:
    • Inhibited thiamine 2-thiothiazolone diphosphate and NADH PubMed
    • Low sensibility to NADPH

Database entries

  • Structure: 1W88 (E1 in complex with subunit binding domain of E2, Geobacillus stearothermophilus)
  • KEGG entry: [3]

Additional information

Expression and regulation

  • Regulation:
    • expression activated by glucose (2.8-fold) PubMed
    • subject to negative stringent control upon amino acid limitation PubMed
  • Regulatory mechanism:
    • stringent response: due to presence of guanine at +1 position of the transcript PubMed
  • Additional information:

Biological materials

  • Mutant: GP459 (spc), available in Stülke lab
  • Expression vector:
  • lacZ fusion: pGP722 (in pAC5), available in Stülke lab
  • GFP fusion:
  • two-hybrid system: B. pertussis adenylate cyclase-based bacterial two hybrid system (BACTH), available in Stülke lab
  • Antibody:

Labs working on this gene/protein

Arthur Aronson, Purdue University, West Lafayette, USA homepage

Your additional remarks

References

Reviews

Kai Tittmann
Reaction mechanisms of thiamin diphosphate enzymes: redox reactions.
FEBS J: 2009, 276(9);2454-68
[PubMed:19476487] [WorldCat.org] [DOI] (I p)

U Neveling, S Bringer-Meyer, H Sahm
Gene and subunit organization of bacterial pyruvate dehydrogenase complexes.
Biochim Biophys Acta: 1998, 1385(2);367-72
[PubMed:9655937] [WorldCat.org] [DOI] (P p)

M S Patel, T E Roche
Molecular biology and biochemistry of pyruvate dehydrogenase complexes.
FASEB J: 1990, 4(14);3224-33
[PubMed:2227213] [WorldCat.org] [DOI] (P p)

P A Frey
Mechanism of coupled electron and group transfer in Escherichia coli pyruvate dehydrogenase.
Ann N Y Acad Sci: 1982, 378;250-64
[PubMed:6805383] [WorldCat.org] [DOI] (P p)

Original publications