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)
Metabolic function and regulation of this protein in SubtiPathways: Folate
MW, pI	27 kDa, 5.068
Gene length, protein length	720 bp, 240 aa
Immediate neighbours	phoR, mdh
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

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):

Genes controlled by PhoP

• Activation by PhoP: phoP-phoR

• Repression by PhoP:

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:

• Interactions: PhoP-PhoP, PhoP-PhoR

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

Database entries

• Structure: 1MVO (receiver domain)

• Swiss prot entry: P13792

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: phoP-phoR

• Sigma factor: SigA

• Regulation: repressed by glucose (4.3-fold) (CcpA) PubMed, induced by phosphate limitation (PhoP), carbon catabolite repression (CcpA)
  • expressed under conditions of phosphate limitation (PhoP) PubMed

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

• Additional information:

Biological materials

• Mutant:

• 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