Na+ homeostasis in Acinetobacter baumannii is facilitated via the activity of the Mrp antiporter
- The human opportunistic pathogen Acinetobacter baumannii is a global threat to healthcare institutions worldwide, since it developed very efficient strategies to evade host defence and to adapt to the different environmental conditions of the host. This work focused on the importance of Na+ homeostasis in A. baumannii with regards to pathobiological aspects. In silico studies revealed a homologue of a multicomponent Na+/H+ antiporter system. Inactivation of the Mrp antiporter through deletion of the first gene (mrpA′) resulted in a mutant that was sensitive to increasing pH values. Furthermore, the strain was highly sensitive to increasing Na+ and Li+ concentrations. Increasing Na+ sensitivity is thought to be responsible for growth impairment in human fluids. Furthermore, deletion of mrpA′ is associated with energetic defects, inhibition of motility and survival under anoxic and dry conditions.
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| Author: | Josephine Joy HubloherGND, Lisa van der Sande, Volker MüllerORCiD |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-792761 |
| DOI: | https://doi.org/10.1111/1462-2920.16039 |
| ISSN: | 1462-2920 |
| Parent Title (English): | Environmental microbiology |
| Publisher: | Blackwell |
| Place of publication: | Oxford [u.a.] |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2022/05/10 |
| Date of first Publication: | 2022/05/10 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2023/10/23 |
| Volume: | 24 |
| Issue: | 9 |
| Page Number: | 14 |
| First Page: | 4411 |
| Last Page: | 4424 |
| Note: | The authors are indebted to the Deutsche Forschungsgemeinschaft for financial support via DFG Research Unit FOR 2251. |
| HeBIS-PPN: | 516383361 |
| Institutes: | Biowissenschaften |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - CC BY - Namensnennung 4.0 International |
