VbhA is the antitoxin to VbhT. The VbhT toxin of the mammalian pathogen Bartonella schoenbuchensis is responsible for the disruptive adenylation of host proteins. VbhT also induces FIC-domain-mediated growth arrest in bacteria; it is inhibited by this antitoxin which binds to block the ATP binding site of the VbhT FIC domain.
Jiyao W et al.(2023). "The conserved domain database in 2023.",