ComS

• Description: antiadaptor protein, assembly link between regulatory components of the competence signal transduction pathway
  
  

Gene name	comS
Synonyms
Essential	no
Product	antiadaptor protein (anti-MecA)
Function	control of ComK degradation
Gene expression levels in SubtiExpress: comS
Interactions involving this protein in SubtInteract: ComS
MW, pI	5 kDa, 9.145
Gene length, protein length	138 bp, 46 aa
Immediate neighbours	srfAB, srfAC
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

genetic competence, short peptides

This gene is a member of the following regulons

Abh regulon, CodY regulon, ComA regulon, PerR regulon, Spx regulon

The gene

Basic information

• Locus tag: BSU03500

Phenotypes of a mutant

• overexpression of ComS results in expression of competence genes in 80% to 90% of the cells PubMed

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family:

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactors:

• Effectors of protein activity:

• Interactions:
  • MecA-ComS PubMed

• Localization:

Database entries

• Structure:

• UniProt: P80355

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: srfAA-srfAB-comS-srfAC-srfAD PubMed

• Expression browser: comS PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • repressed during growth in the presence of branched chain amino acids (CodY) PubMed
  • repressed during hydrogen peroxide stress (PerR) PubMed
  • expressed at high cell density (ComA) PubMed

• Regulatory mechanism:
  • CodY: transcription repression PubMed
  • ComA: transcription activation PubMed
  • PerR: transcription activation PubMed
  • Spx: transcription repression PubMed
  • Abh: transcription repressionPubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody: