Abstract
Enterococcus (E.) faecalis is found as commensal in healthy humans, in a variety of fermented foods. It can serve as probiotic but also as pathogen causing endocarditis, bacteremia and urinary tract infections. We have employed a proteomic study with E. faecalis strain OG1RF under different growth conditions and in contact to mouse intestinal cells to identify novel latent and adaptive fitness determinants. These relate to changes in catabolic pathways (BudA), protein biosynthesis (AsnS), cellular surface biosynthesis (RmlA) and regulatory mechanisms (OmpR). This knowledge can be used to derive novel evidence-based targets, which can be used to further elucidate gene expression changes enhancing pathogenicity or fitness in a commensal strain and possibly delineate this species into groups of higher and lower risk for applications in a food or a medical context versus improved treatment strategies of the so far hard to cure diseases.
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Acknowledgments
We thank Prof. Axel Imhof, Zentrallabor für Proteinanalytik (ZfP, Adolf-Butenandt-Institute of Ludwig-Maximilians-Universität München, Germany) for LC-ESI MS/MS analysis. This work was supported by GRK 1482 of the German Research Foundation (DFG).
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Communicated by Erko Stackebrandt.
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Lindenstrauß, A.G., Behr, J., Ehrmann, M.A. et al. Identification of fitness determinants in Enterococcus faecalis by differential proteomics. Arch Microbiol 195, 121–130 (2013). https://doi.org/10.1007/s00203-012-0857-3
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DOI: https://doi.org/10.1007/s00203-012-0857-3