PhoP

• Description: two-component response regulator, regulation of phosphate metabolism
  
  

Gene name	phoP
Synonyms
Essential	no
Product	two-component response regulator
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: Folate, Protein secretion
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

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family:

• 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

• 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:

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

Wael R Abdel-Fattah, Yinghua Chen, Amr Eldakak, F Marion Hulett
Bacillus subtilis phosphorylated PhoP: direct activation of the E(sigma)A- and repression of the E(sigma)E-responsive phoB-PS+V promoters during pho response.
J Bacteriol: 2005, 187(15);5166-78
[PubMed:16030210] [WorldCat.org] [DOI] (P p)

H Antelmann, C Scharf, M Hecker
Phosphate starvation-inducible proteins of Bacillus subtilis: proteomics and transcriptional analysis.
J Bacteriol: 2000, 182(16);4478-90
[PubMed:10913081] [WorldCat.org] [DOI] (P p)

S Eder, W Liu, F M Hulett
Mutational analysis of the phoD promoter in Bacillus subtilis: implications for PhoP binding and promoter activation of Pho regulon promoters.
J Bacteriol: 1999, 181(7);2017-25
[PubMed:10094677] [WorldCat.org] [DOI] (P p)

S M Birkey, W Liu, X Zhang, M F Duggan, F M Hulett
Pho signal transduction network reveals direct transcriptional regulation of one two-component system by another two-component regulator: Bacillus subtilis PhoP directly regulates production of ResD.
Mol Microbiol: 1998, 30(5);943-53
[PubMed:9988472] [WorldCat.org] [DOI] (P p)

Y Qi, F M Hulett
Role of Pho-P in transcriptional regulation of genes involved in cell wall anionic polymer biosynthesis in Bacillus subtilis.
J Bacteriol: 1998, 180(15);4007-10
[PubMed:9683503] [WorldCat.org] [DOI] (P p)

W Liu, Y Qi, F M Hulett
Sites internal to the coding regions of phoA and pstS bind PhoP and are required for full promoter activity.
Mol Microbiol: 1998, 28(1);119-30
[PubMed:9593301] [WorldCat.org] [DOI] (P p)

W Liu, S Eder, F M Hulett
Analysis of Bacillus subtilis tagAB and tagDEF expression during phosphate starvation identifies a repressor role for PhoP-P.
J Bacteriol: 1998, 180(3);753-8
[PubMed:9457886] [WorldCat.org] [DOI] (P p)

W Liu, F M Hulett
Bacillus subtilis PhoP binds to the phoB tandem promoter exclusively within the phosphate starvation-inducible promoter.
J Bacteriol: 1997, 179(20);6302-10
[PubMed:9335276] [WorldCat.org] [DOI] (P p)

Y Qi, Y Kobayashi, F M Hulett
The pst operon of Bacillus subtilis has a phosphate-regulated promoter and is involved in phosphate transport but not in regulation of the pho regulon.
J Bacteriol: 1997, 179(8);2534-9
[PubMed:9098050] [WorldCat.org] [DOI] (P p)