https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50035 Wed 24 Jan 2024 15:36:26 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43839 Tue 04 Oct 2022 11:46:39 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49090 Thu 04 May 2023 14:03:55 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:44159 Acinetobacter baumannii is a ubiquitous Gram-negative bacterium, that is associated with significant disease in immunocompromised individuals. The success of A. baumannii is partly attributable to its high level of antibiotic resistance. Further, A. baumannii expresses a broad arsenal of putative zinc efflux systems that are likely to aid environmental persistence and host colonization, but detailed insights into how the bacterium deals with toxic concentrations of zinc are lacking. In this study we present the transcriptomic responses of A. baumannii to toxic zinc concentrations. Subsequent mutant analyses revealed a primary role for the resistance-nodulation-cell division heavy metal efflux system CzcCBA, and the cation diffusion facilitator transporter CzcD in zinc resistance. To examine the role of zinc at the host-pathogen interface we utilized a murine model of zinc deficiency and challenge with wild-type and czcA mutant strains, which identified highly site-specific roles for zinc during A. baumannii infection. Overall, we provide novel insight into the key zinc resistance mechanisms of A. baumannii and outline the role these systems play in enabling the bacterium to survive in diverse environments.]]> Mon 10 Oct 2022 09:45:29 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47900 Mon 06 Feb 2023 14:13:54 AEDT ]]>