HolB

• Description: DNA polymerase III (delta subunit), part of the replisome
  
  

Gene name	holB
Synonyms	yaaS
Essential	yes PubMed
Product	DNA polymerase III (delta subunit)
Function	DNA replication
Gene expression levels in SubtiExpress: holB
Interactions involving this protein in SubtInteract: HolB
MW, pI	37 kDa, 6.334
Gene length, protein length	987 bp, 329 aa
Immediate neighbours	yaaR, yaaT
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

DNA replication, essential genes

The gene

Basic information

• Locus tag: BSU00310

Phenotypes of a mutant

essential PubMed

Database entries

• DBTBS entry: no entry

• SubtiList entry: [1]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:
  • Deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1) (according to Swiss-Prot)
  • required for bacteriophage SPP1 replication PubMed

• Protein family:

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:
  • DnaX(3)-HolA-HolB, the clamp-loader complex PubMed
  • part of the replisome: PolC-HolA-HolB-DnaX-DnaN-DnaG-DnaC-DnaI-DnaD-SsbA-DnaE-PriA-DnaB PubMed

• Localization:
  • forms foci PubMed
  • cytoplasm (homogeneous) PubMed

Database entries

• Structure:

• UniProt: P37540

• KEGG entry: [2]

• E.C. number: 2.7.7.7

Expression and regulation

• Operon:

• Expression browser: holB PubMed

• Sigma factor:

• Regulation:

• Regulatory mechanism:

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody: