Table 1.

Several Characterized Type II TA Modules Involve in Salmonella Persistence

TA Module	Predicted Mechanism of Toxin Activity	Molecular Class of Toxin	Cellular Target	References
ShpAB	Protein translation inhibition: cleave mRNA	RelE-like RNases	mRNA	[22]
VapBC	Protein translation inhibition: cleave initiator tRNA	PIN-domain ribonucleases	tRNAfMet	[97,101,103]
TacAT	Protein translation inhibition: acetylating aminoacyl-tRNA	GNAT	tRNA(gly)	[23,84,102]
TacAT2	Protein translation inhibition: acetylating aminoacyl-tRNA	GNAT	tRNA	[23,84]
TacAT3	Protein translation inhibition: acetylating aminoacyl-tRNA	GNAT	tRNA	[23,84]