DisA

• Description: DNA integrity scanning protein,diadenylate cyclase, delays sporulation in the case of chromosome damage, the DisA-dependent checkpoint arrests DNA replication during B. subtilis spore outgrowth until the germinating spore's genome is free of damage
  
  

Gene name	disA
Synonyms	yacK
Essential	no
Product	DNA integrity scanning protein, has diadenylate cyclase activity
Function	control of sporulation initiation
Gene expression levels in SubtiExpress: disA
Interactions involving this protein in SubtInteract: DisA
Metabolic function and regulation of this protein in SubtiPathways: disA
MW, pI	40 kDa, 5.569
Gene length, protein length	1080 bp, 360 aa
Immediate neighbours	radA, yacL
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

cell division, metabolism of signalling nucleotides, sporulation/ other, general stress proteins (controlled by SigB), cell envelope stress proteins (controlled by SigM, V, W, X, Y), heat shock proteins

This gene is a member of the following regulons

CtsR regulon, SigB regulon, SigM regulon

The gene

Basic information

• Locus tag: BSU00880

Database entries

• BsubCyc: BSU00880

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:
  • synthesis of c-di-AMP from two molecules of ATP PubMed

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

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:
  • contains a DAC domain for the synthesis of c-di-AMP PubMed

• Modification:

• Cofactors:

• Effectors of protein activity:
  • RadA is an inhibitor of DisA activity PubMed

• Interactions:
  • forms octamers
  • RacA-DisA PubMed
  • RadA-DisA PubMed, this interaction result in the inhibition of DisA activity PubMed

• Localization:
  • see a video showing the movement of DisA in the cell (in real time) PubMed
  • forms discrete globular foci in germinating spres that colocalize with the nucleoid PubMed

Database entries

• BsubCyc: BSU00880

• Structure: 3C23 PubMed

• UniProt: P37573

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon:
  • ctsR-mcsA-mcsB-clpC-radA-disA PubMed
  • disA PubMed

• Expression browser: disA PubMed

• Sigma factor:
  • ctsR: SigA PubMed, SigB PubMed1 PubMed2
  • disA: SigM PubMed

• Regulation:
  • induced by stress (SigB) PubMed, induced by heat (CtsR) PubMed
  • expressed during sporulation in the mother cell PubMed
  • expressed during germination and spore outgrowth PubMed

• Regulatory mechanism: CtsR: transcription repression PubMed

• Additional information:
  • number of protein molecules per cell (minimal medium with glucose and ammonium): 314 PubMed
  • number of protein molecules per cell (complex medium with amino acids, without glucose): 393 PubMed
  • number of protein molecules per cell (minimal medium with glucose and ammonium, exponential phase): 465 PubMed
  • number of protein molecules per cell (minimal medium with glucose and ammonium, early stationary phase after glucose exhaustion): 179 PubMed
  • number of protein molecules per cell (minimal medium with glucose and ammonium, late stationary phase after glucose exhaustion): 232 PubMed

Biological materials

• Mutant:
  • GP987 (disA::tet), available in Jörg Stülke's lab
  • BKG2 (radA-disA::spc), available in Jörg Stülke's lab
  • 1A939 ( disA::tet), PubMed, available at BGSC

• Expression vector:
  • IPTG inducible expression of His-disA in E. coli: pGP2563 (in pET19b), available in Jörg Stülke's lab

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Reviews

Justin S Lenhart, Jeremy W Schroeder, Brian W Walsh, Lyle A Simmons
DNA repair and genome maintenance in Bacillus subtilis.
Microbiol Mol Biol Rev: 2012, 76(3);530-64
[PubMed:22933559] [WorldCat.org] [DOI] (I p)

Ute Römling
Great times for small molecules: c-di-AMP, a second messenger candidate in Bacteria and Archaea.
Sci Signal: 2008, 1(33);pe39
[PubMed:18714086] [WorldCat.org] [DOI] (I e)