DnaG

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  • Description: DNA primase, part of the replisome

Gene name dnaG
Synonyms dnaE
Essential yes PubMed
Product DNA primase
Function DNA replication
Gene expression levels in SubtiExpress: dnaG
Interactions involving this protein in SubtInteract: DnaG
MW, pI 68 kDa, 6.706
Gene length, protein length 1809 bp, 603 aa
Immediate neighbours sigA, antE
Sequences Protein DNA DNA_with_flanks
Genetic context
DnaG context.gif
This image was kindly provided by SubtiList
Expression at a glance   PubMed
DnaG expression.png















Categories containing this gene/protein

DNA replication, essential genes

This gene is a member of the following regulons

SigH regulon, Spo0A regulon

The gene

Basic information

  • Locus tag: BSU25210

Phenotypes of a mutant

essential PubMed

Database entries

  • DBTBS entry: [1]
  • SubtiList entry: [2]

Additional information

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity:
    • required for bacteriophage SPP1 replication PubMed
  • Protein family: DNA primase family (according to Swiss-Prot)
  • Paralogous protein(s):

Extended information on the protein

  • Kinetic information:
  • Domains:
  • Modification:
  • Cofactor(s):
  • Effectors of protein activity:
    • the enzymatic activity is inhibited by (p)ppGpp during the ´stringent response´ PubMed
    • DnaG primase activity is stimulates by DnaC PubMed

Database entries

  • Structure: 1D0Q (zinc binding domain, Geobacillus stearothermophilus), 1Z8S (DnaB binding domain, AA 452-597, Geobacillus stearothermophilus)
  • KEGG entry: [3]
  • E.C. number:

Additional information

Expression and regulation

  • Regulation:
    • repressed under conditions that trigger sporulation (Spo0A) PubMed
    • enzymatic activity is inhibited by (p)ppGpp during the ´stringent response´
  • Regulatory mechanism:
  • Additional information:
    • enzymatic activity is inhibited by (p)ppGpp during the ´stringent response´ PubMed

Biological materials

  • Mutant:
  • Expression vector:
  • lacZ fusion:
  • GFP fusion:
  • two-hybrid system:
  • Antibody:

Labs working on this gene/protein

Your additional remarks

References

Reviews

Geoffrey S Briggs, Wiep Klaas Smits, Panos Soultanas
Chromosomal replication initiation machinery of low-G+C-content Firmicutes.
J Bacteriol: 2012, 194(19);5162-70
[PubMed:22797751] [WorldCat.org] [DOI] (I p)

Richard L Gourse, James L Keck
Magic spots cast a spell on DNA primase.
Cell: 2007, 128(5);823-4
[PubMed:17350566] [WorldCat.org] [DOI] (P p)


Original publications