PstS

• Description: phosphate ABC transporter (binding protein)
  
  

Gene name	pstS
Synonyms	yqgG, yzmB
Essential	no
Product	phosphate ABC transporter (binding protein)
Function	high-affinity phosphate uptake
MW, pI	31 kDa, 4.845
Gene length, protein length	900 bp, 300 aa
Immediate neighbours	pstC, pbpA
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: BSU24990

Database entries

• DBTBS entry: no entry

• SubtiList entry: [1]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: pstS family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification: phosphorylated on ser/ thr/ tyr PubMed

• Cofactor(s):

• Effectors of protein activity:

• Interactions: (PstBA-PstBB)-(PstA-PstC)-PstS PubMed

• Localization: cell membrane (according to Swiss-Prot), extracellular (signal peptide) PubMed

Database entries

• Structure:

• UniProt: P46338

• KEGG entry: [2]

• E.C. number:

Expression and regulation

• Operon: pstS-pstC-pstA-pstBA-pstBB PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • expressed under conditions of phosphate limitation (5000-fold induced) (PhoP) PubMed

• Regulatory mechanism:
  • PhoP: transcription activation PubMed

• Additional information:
  • mRNA processing between pstS and pstC to maintain higher concentrations of PstS relative to other components of the ABC transporter PubMed

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