PhoP

• Description: two-component response regulator (OmpR family), regulation of phosphate metabolism
  
  

Gene name	phoP
Synonyms
Essential	no
Product	two-component response regulator (OmpR family)
Function	regulation of phosphate metabolism (phoA, phoB, phoD, resABCDE, tagA-tagB, tagDEF, tuaA-H)
Gene expression levels in SubtiExpress: phoP
Interactions involving this protein in SubtInteract: PhoP
Metabolic function and regulation of this protein in SubtiPathways: phoP
MW, pI	27 kDa, 5.068
Gene length, protein length	720 bp, 240 aa
Immediate neighbours	phoR, mdh
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

phosphate metabolism, transcription factors and their control, regulators of core metabolism, sporulation proteins, general stress proteins (controlled by SigB), membrane proteins, phosphoproteins

This gene is a member of the following regulons

CcpA regulon, PhoP regulon, SigB regulon, SigE regulon

The gene

Basic information

• Locus tag: BSU29110

Database entries

• BsubCyc: BSU29110

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: OmpR family of two-component response regulators

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification: phosphorylation by PhoR under conditions of phosphate limitation (stimulates DNA-binding activity)

• Cofactor(s):

• Effectors of protein activity: phosphorylation stimulates DNA-binding activity

• Interactions: PhoP-PhoP, PhoP-PhoR

• Localization: cell membrane (according to Swiss-Prot)

Database entries

• BsubCyc: BSU29110

• Structure: 1MVO (receiver domain)

• UniProt: P13792

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: phoP-phoR PubMed

• Expression browser: phoP PubMed

• Sigma factor: SigA PubMed, SigB PubMed, SigE PubMed

• Regulation:
  • carbon catabolite repression (CcpA) PubMed
  • expressed under conditions of phosphate limitation (PhoP) PubMed
  • expressed in post-exponential phase (ScoC) PubMed

• Regulatory mechanism:
  • CcpA: transcription repression PubMed
  • PhoP: transcription activation PubMed
  • ScoC: transcription repression PubMed

• Additional information:
  • number of protein molecules per cell (minimal medium with glucose and ammonium): 90 PubMed
  • number of protein molecules per cell (complex medium with amino acids, without glucose): 706 PubMed

Biological materials

• Mutant:
  • 1A966 ( phoP::tet), PubMed, available at BGSC

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

Marion Hulett, University of Illinois at Chicago, USA Homepage

References

Targets of PhoR

Additional publications: PubMed