PhoB

• Description: alkaline phosphatase A
  
  

Gene name	phoB
Synonyms	phoAIII
Essential	no
Product	alkaline phosphatase A
Function	aquisition of phosphate upon phosphoate starvation
MW, pI	50 kDa, 5.895
Gene length, protein length	1386 bp, 462 aa
Immediate neighbours	ydhF, ydhG
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: BSU05740

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: A phosphate monoester + H₂O = an alcohol + phosphate (according to Swiss-Prot)

• Protein family: alkaline phosphatase family (according to Swiss-Prot)

• Paralogous protein(s): PhoA

Extended information on the protein

• Kinetic information:

• Domains:

• Modification: phosphorylated on ser/ thr/ tyr PubMed

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization: extracellular (signal peptide) PubMed

Database entries

• Structure:

• Swiss prot entry: P19405

• KEGG entry: [3]

• E.C. number: 3.1.3.1

Expression and regulation

• Operon: phoB-ydhF

• Sigma factor: SigA, SigE

• Regulation:
  • expressed under conditions of phosphate limitation (PhoP) PubMed

• Regulatory mechanism:
  • 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