PyrK

• 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 This image was kindly provided by SubtiList
Expression at a glance   PubMed

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

Database entries

• BsubCyc: BSU15530

• DBTBS entry: [1]

• SubtiList entry: [2]

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:

• Domains:

• Modification:

• Cofactors: contains an iron-sulfur cluster

• Effectors of protein activity:

• Interactions:

• Localization:

Database entries

• BsubCyc: BSU15530

• Structure:

• UniProt: P25983

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: pyrR-pyrP-pyrB-pyrC-pyrAA-pyrAB-pyrK-pyrD-pyrF-pyrE PubMed

• Expression browser: pyrK PubMed

• Sigma factor: SigA PubMed

• 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: