PyrK

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  • Description: dihydroorotic acid dehydrogenase (electron transfer subunit)

Gene name pyrK
Synonyms pyrDII, ylxD
Essential no
Product dihydroorotic acid dehydrogenase (electron transfer subunit)
Function pyrimidine biosynthesis
Gene expression levels in SubtiExpress: pyrK
Metabolic function and regulation of this protein in SubtiPathways:
pyrK
MW, pI 27 kDa, 5.582
Gene length, protein length 768 bp, 256 aa
Immediate neighbours pyrAB, pyrD
Sequences Protein DNA DNA_with_flanks
Genetic context
PyrK context.gif
This image was kindly provided by SubtiList
Expression at a glance   PubMed
PyrK expression.png















Categories containing this gene/protein

biosynthesis/ acquisition of nucleotides, most abundant proteins

This gene is a member of the following regulons

PyrR regulon

The gene

Basic information

  • Locus tag: BSU15530

Phenotypes of a mutant

Database entries

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

Additional information

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity:
  • Protein family: FAD-binding FR-type domain (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]
  • E.C. number:

Additional information

Expression and regulation

  • Regulation:
    • induced in the absence of uridine nucleotides (PyrR) PubMed
  • Regulatory mechanism:
    • PyrR: RNA switch, transcription termination/ antitermination (in the presence of uridine nucleotides: termination, in their absence: antitermination) PubMed
  • Additional information:
    • belongs to the 100 most abundant proteins PubMed
    • number of protein molecules per cell (minimal medium with glucose and ammonium): 201 PubMed
    • number of protein molecules per cell (complex medium with amino acids, without glucose): 1096 PubMed

Biological materials

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

Labs working on this gene/protein

Your additional remarks

References

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)

A E Kahler, F S Nielsen, R L Switzer
Biochemical characterization of the heteromeric Bacillus subtilis dihydroorotate dehydrogenase and its isolated subunits.
Arch Biochem Biophys: 1999, 371(2);191-201
[PubMed:10545205] [WorldCat.org] [DOI] (P p)

A E Kahler, R L Switzer
Identification of a novel gene of pyrimidine nucleotide biosynthesis, pyrDII, that is required for dihydroorotate dehydrogenase activity in Bacillus subtilis.
J Bacteriol: 1996, 178(16);5013-6
[PubMed:8759868] [WorldCat.org] [DOI] (P p)

R J Turner, Y Lu, R L Switzer
Regulation of the Bacillus subtilis pyrimidine biosynthetic (pyr) gene cluster by an autogenous transcriptional attenuation mechanism.
J Bacteriol: 1994, 176(12);3708-22
[PubMed:8206849] [WorldCat.org] [DOI] (P p)

C L Quinn, B T Stephenson, R L Switzer
Functional organization and nucleotide sequence of the Bacillus subtilis pyrimidine biosynthetic operon.
J Biol Chem: 1991, 266(14);9113-27
[PubMed:1709162] [WorldCat.org] (P p)