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Toxin-Antitoxic Loci Vapbc-1 And Vapxd Contribute To Survival And Virulence In Nontypeable Haemophilus Influenzae, Dabin Ren, Anna N. Walker, Dayle A. Daines
Toxin-Antitoxic Loci Vapbc-1 And Vapxd Contribute To Survival And Virulence In Nontypeable Haemophilus Influenzae, Dabin Ren, Anna N. Walker, Dayle A. Daines
Biological Sciences Faculty Publications
Background: Nontypeable Haemophilus influenzae (NTHi) is a significant human pathogen responsible for respiratory tract infections and the most common cause of recurrent otitis media. Type II toxin-antitoxin (TA) systems are genetic elements that code for a stable protein toxin and a labile antitoxin that are thought to be involved in metabolic regulation of bacteria by enabling a switch to a dormant state under stress conditions. The contribution to infection persistence of the NTHi TA loci vapBC-1 and vapXD was examined in this study.
Results: Deletions in vapBC-1, vapXD and vapBC-1 vapXD significantly decreased the survival of NTHi co-cultured with …