HolB

• Description: DNA polymerase III (delta' subunit), part of the clamp-loader complex and 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
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

DNA replication, essential genes

The gene

Basic information

• Locus tag: BSU00310

Phenotypes of a mutant

essential PubMed

Database entries

• BsubCyc: BSU00310

• 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

• BsubCyc: BSU00310

• Structure:

• UniProt: P37540

• KEGG entry: [2]

• E.C. number: 2.7.7.7

Expression and regulation

• Operon: darA-yaaR-holB-yaaT-yabA-yabB-yazA-yabC PubMed

• Expression browser: holB PubMed

• Sigma factor:

• Regulation:

• Regulatory mechanism:

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system: B. pertussis adenylate cyclase-based bacterial two hybrid system (BACTH), available in Jörg Stülke's lab

• Antibody: