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- W3201872729 abstract "Abstract In Staphylococcus aureus , the two‐component system SaeRS is responsible for regulating various virulence factors essential for the success of this pathogen. SaeRS can be stimulated by neutrophil‐derived products but has also recently been shown to be inactivated by the presence of free fatty acids. A mechanism for how fatty acids negatively impacts SaeRS has not been described. We found that unsaturated fatty acids, as well as fatty acids not commonly found in Staphylococcal membranes, prevent the activation of SaeRS at a lower concentration than their saturated counterparts. These fatty acids can negatively impact SaeRS without altering the respiratory capacity of the bacterium. To uncover a potential mechanism for how fatty acids impact SaeRS function/activity, we utilized a naturally occurring point mutation found in S. aureus as well as chimeric SaeS proteins. Using these tools, we identified that the native transmembrane domains of SaeS dictate the transcriptional response to fatty acids in S. aureus . Our data support a model where free fatty acids alter the activity of the two‐component system SaeRS directly through the sensor kinase SaeS and is dependent on the transmembrane domains of the protein." @default.
- W3201872729 created "2021-10-11" @default.
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- W3201872729 date "2021-10-30" @default.
- W3201872729 modified "2023-09-24" @default.
- W3201872729 title "Fatty acids can inhibit <i>Staphylococcus aureus</i> SaeS activity at the membrane independent of alterations in respiration" @default.
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- W3201872729 doi "https://doi.org/10.1111/mmi.14830" @default.
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