Elucidating the Linezolid response of Staphylococcus aureus USA300 (Hi3 quantification)

The translation inhibitor Linezolid is an important antibiotic of last resort against multiresistant gram-positive pathogens including MRSA. Linezolid is reported to specifically inhibit extracellular virulence factors, but the molecular cause is unknown. To elucidate the physiological response of S. aureus to Linezolid in general and the possible inhibition of virulence factors specifically we performed a holistic study. We added Linezolid to logarithmically growing S. aureus cells and analysed the Linezolid stress response with transcriptomics, quantitative proteomics and microscopy experiments.