Abstract
Toxin-antitoxin (TA) systems are genetic modules that are widespread in prokaryotes and archaea. On the chromosome, these systems may be involved in several virulence factors of pathogenic bacteria. In E. coli K12, 36 TA systems have been described, of which type II is the most abundant and studied. Within the scope of E. coli that cause diarrhea, the STEC pathotype stands out as one of t…