DivIVA

• Description: cell-division initiation protein (septum placement)
  
  

Gene name	divIVA
Synonyms	ylmJ
Essential	no
Product	cell-division initiation protein
Function	septum placement
MW, pI	19 kDa, 4.846
Gene length, protein length	492 bp, 164 aa
Immediate neighbours	ylmH, ileS
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: BSU15420

Phenotypes of a mutant

Deletion of divIVA leads to filamentation and polar divisions that in turn cause a minicell phenotype. A divIVA mutant has a severe sporulation defect.

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: DivIVA is required for polar localisation of MinCD via MinJ. It also recruits RacA to the distal pole of the prespore.

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

• Paralogous protein(s): GpsB

Extended information on the protein

• Kinetic information:

• Domains:

• Modification: The Mycobacterium DivIVA homologue Wag31 is phosphorylated at T73.

• Cofactor(s):

• Effectors of protein activity:

• Interactions: DivIVA-RacA, DivIVA-MinJ

• Localization: DivIVA forms a ring underneath the invaginating membrane at the site of cell division and is enriched at both cell poles.

Database entries

• Structure:

• Swiss prot entry: P71021

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: one gene cistron

• Sigma factor:

• Regulation:

• Regulatory mechanism:

• Additional information:

Biological materials

• Mutant: divIVA::tet available from the Hamoen Lab

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

Leendert Hamoen, Centre for Bacterial Cell Biology, Newcastle upon Tyne, United Kingdom [4]

Imrich Barak, Slovak Academy of Science, Bratislava, Slovakia homepage

References

Rok Lenarcic, Sven Halbedel, Loek Visser, Michael Shaw, Ling Juan Wu, Jeff Errington, Davide Marenduzzo, Leendert W Hamoen
Localisation of DivIVA by targeting to negatively curved membranes.
EMBO J: 2009, 28(15);2272-82
[PubMed:19478798] [WorldCat.org] [DOI] (I p)

Pamela Gamba, Jan-Willem Veening, Nigel J Saunders, Leendert W Hamoen, Richard A Daniel
Two-step assembly dynamics of the Bacillus subtilis divisome.
J Bacteriol: 2009, 191(13);4186-94
[PubMed:19429628] [WorldCat.org] [DOI] (I p)

H B Thomaides, M Freeman, M El Karoui, J Errington
Division site selection protein DivIVA of Bacillus subtilis has a second distinct function in chromosome segregation during sporulation.
Genes Dev: 2001, 15(13);1662-73
[PubMed:11445541] [WorldCat.org] [DOI] (P p)

D H Edwards, J Errington
The Bacillus subtilis DivIVA protein targets to the division septum and controls the site specificity of cell division.
Mol Microbiol: 1997, 24(5);905-15
[PubMed:9219999] [WorldCat.org] [DOI] (P p)