SepF

• Description: part of the divisome
  
  

Gene name	sepF
Synonyms	ylmF
Essential	no
Product	FtsZ-interacting protein
Function	proper execution of septum synthesis
Interactions involving this protein in SubtInteract: SepF
MW, pI	17 kDa, 4.863
Gene length, protein length	447 bp, 149 aa
Immediate neighbours	ylmE, ylmG
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

Categories containing this gene/protein

cell division

This gene is a member of the following regulons

Spo0A regulon

The gene

Basic information

• Locus tag: BSU15390

Expression

Phenotypes of a mutant

• perturbation of the formation of properly formed division septa
• less efficient cell division results in longer cells. Electron microscopy reveals strongly distorted division septa.
• the sepF mutation in combination with a constitutively active form of WalR (WalR-R204C) results in the formation of cell wall-less L-forms PubMed

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:
  • SepF assembles into very large (∼50 nm diameter) rings. These rings are able to bundle FtsZ protofilaments into strikingly long and regular tubular structures reminiscent of eukaryotic microtubules PubMed

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

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:
  • SepF-FtsZ PubMed

• Localization: septum PubMed

Database entries

• Structure:

• UniProt: O31728

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: ylmD-ylmE-sepF-ylmG-ylmH PubMed

• Sigma factor:

• Regulation:
  • repressed under conditions that trigger sporulation (Spo0A) PubMed

• Regulatory mechanism:
  • Spo0A: transcription repression PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

Leendert Hamoen, CBCB, Newcastle University, UK

Shu Ishikawa, Nara Institute of Science and Technology, Nara, Japan

Your additional remarks

SepF mutation is synthetic lethal in combination with an ezrA mutation or an ftsA mutation.

References

Original Publications

Additional publications: PubMed

Shu Ishikawa, Yoshikazu Kawai, Konosuke Hiramatsu, Masayoshi Kuwano, Naotake Ogasawara
A new FtsZ-interacting protein, YlmF, complements the activity of FtsA during progression of cell division in Bacillus subtilis.
Mol Microbiol: 2006, 60(6);1364-80
[PubMed:16796675] [WorldCat.org] [DOI] (P p)

Leendert W Hamoen, Jean-Christophe Meile, Wouter de Jong, Philippe Noirot, Jeff Errington
SepF, a novel FtsZ-interacting protein required for a late step in cell division.
Mol Microbiol: 2006, 59(3);989-99
[PubMed:16420366] [WorldCat.org] [DOI] (P p)

Virginie Molle, Masaya Fujita, Shane T Jensen, Patrick Eichenberger, José E González-Pastor, Jun S Liu, Richard Losick
The Spo0A regulon of Bacillus subtilis.
Mol Microbiol: 2003, 50(5);1683-701
[PubMed:14651647] [WorldCat.org] [DOI] (P p)