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  • Description: toxic peptide

Gene name txpA
Synonyms yqcR, yqdB
Essential no
Product toxic peptide
Function toxin
Gene expression levels in SubtiExpress: txpA
MW, pI 6 kDa, 8.139
Gene length, protein length 177 bp, 59 aa
Immediate neighbours yqbN/2, ratA
Sequences Protein DNA DNA_with_flanks
Genetic context
YqdB context.gif
This image was kindly provided by SubtiList
Expression at a glance   PubMed
TxpA expression.png

Categories containing this gene/protein

toxins, antitoxins and immunity against toxins, Skin element, membrane proteins

This gene is a member of the following regulons

ratA regulon

The gene

Basic information

  • Locus tag: BSU26050

Phenotypes of a mutant

Database entries

  • DBTBS entry: [1]
  • SubtiList entry: [2]

Additional information

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity:
  • Protein family:
  • Paralogous protein(s):

Extended information on the protein

  • Kinetic information:
  • Domains:
  • Modification:
  • Cofactor(s):
  • Effectors of protein activity:

Database entries

  • Structure:
  • KEGG entry: [3]
  • E.C. number:

Additional information

Expression and regulation

  • Regulation:
  • Additional information:
    • next to yonT, the txpA mRNA has the strongest Shine-Dalgarno region in B. subtilis PubMed

Biological materials

  • Mutant:
  • Expression vector:
  • lacZ fusion:
  • GFP fusion:
  • two-hybrid system:
  • Antibody:

Labs working on this gene/protein

Richard Losick, Harvard University, Cambridge, USA Homepage

Your additional remarks



Fabian M Commichau, Jörg Stülke
A mystery unraveled: essentiality of RNase III in Bacillus subtilis is caused by resident prophages.
PLoS Genet: 2012, 8(12);e1003199
[PubMed:23300472] [WorldCat.org] [DOI] (I p)

Original publications

Sylvain Durand, Laetitia Gilet, Ciarán Condon
The essential function of B. subtilis RNase III is to silence foreign toxin genes.
PLoS Genet: 2012, 8(12);e1003181
[PubMed:23300471] [WorldCat.org] [DOI] (I p)

Roula Daou-Chabo, Nathalie Mathy, Lionel Bénard, Ciarán Condon
Ribosomes initiating translation of the hbs mRNA protect it from 5'-to-3' exoribonucleolytic degradation by RNase J1.
Mol Microbiol: 2009, 71(6);1538-50
[PubMed:19210617] [WorldCat.org] [DOI] (I p)

Jessica M Silvaggi, John B Perkins, Richard Losick
Small untranslated RNA antitoxin in Bacillus subtilis.
J Bacteriol: 2005, 187(19);6641-50
[PubMed:16166525] [WorldCat.org] [DOI] (P p)