SipW

• Description: signal peptidase I, processes TasA and TapA, required for biofilm formation
  
  

Gene name	sipW
Synonyms	yqhE
Essential	no
Product	signal peptidase I
Function	biofilm formation
Regulation of this protein in SubtiPathways: Biofilm, Protein secretion
MW, pI	20 kDa, 5.494
Gene length, protein length	570 bp, 190 aa
Immediate neighbours	tasA, tapA
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

Categories containing this gene/protein

protein secretion, biofilm formation

This gene is a member of the following regulons

AbrB regulon, SinR regulon

The gene

Basic information

• Locus tag: BSU24630

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: Cleavage of hydrophobic, N-terminal signal or leader sequences from TasA and TapA

• Protein family: peptidase S26B family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization: membrane

Database entries

• Structure:

• UniProt: P54506

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: tapA-sipW-tasA PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • repressed by SinR PubMed
  • repressed during logrithmic growth (AbrB) PubMed

• Regulatory mechanism:
  • AbrB: transcription repression PubMed
  • SinR: transcription repression PubMed

• Additional information:
  • induction by sequestration of SinR by SinI or SlrA PubMed or by SlrR PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody: