Proteomic analyses of iron-responsive, Clp-dependent changes in Staphylococcus aureus

Pathogens and Disease
Allison J FarrandEric Patrick Skaar

Abstract

Staphylococcus aureus is a frequent human pathogen that is capable of causing a wide range of life-threatening infections. A promising antibacterial target is the Clp proteolytic system, which performs the vital function of maintaining protein turnover within the cell. This system primarily impacts the bacterial response to various stresses by degrading specific proteins but can also regulate a number of physiological processes through protein degradation. A critical stress to which S. aureus must adapt during infection of a vertebrate host is nutrient iron limitation. We have previously shown that the Clp system impacts expression of genes required for heme-iron acquisition during iron limitation and is required for staphylococcal infection. Based on these data, we sought to further define the Clp-dependent impact on S. aureus during iron limitation by characterizing the proteomic profiles of mutants inactivated for components of the Clp protease, including ClpP, ClpC and ClpX, in high- and low-iron conditions. Our results reveal numerous proteins altered in abundance in the clp mutants and provide new insights into the staphylococcal proteolytic network during nutrient iron limitation.

References

Feb 1, 1996·Molecular Microbiology·M HeckerU Völker
Aug 2, 2000·Proceedings of the National Academy of Sciences of the United States of America·S K SinghM R Maurizi
Feb 8, 2003·Science·Sarkis K MazmanianOlaf Schneewind
Jun 7, 2003·Molecular Microbiology·Dorte FreesHanne Ingmer
Oct 4, 2005·Nature Medicine·Heike Brötz-OesterheltHarald Labischinski
Mar 30, 2006·Antimicrobial Agents and Chemotherapy·Kati SeidlMarkus Bischoff
Aug 29, 2006·PLoS Pathogens·David B FriedmanEric P Skaar
Sep 29, 2006·Antimicrobial Agents and Chemotherapy·S GardeteA Tomasz
May 5, 2011·FEMS Immunology and Medical Microbiology·Ludwig StenzJacques Schrenzel
Aug 6, 2013·Journal of Bacteriology·Justin W GrahamChia Y Lee
Sep 3, 2013·Journal of Bacteriology·Allison J FarrandEric P Skaar

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