1. Phenol-soluble modulins in staphylococci.
- Author
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Periasamy, Saravanan, Chatterjee, Som S., Cheung, Gordon Y. C., and Otto, Michael
- Subjects
PEPTIDES ,PATHOLOGICAL physiology ,STAPHYLOCOCCUS aureus ,BIOFILMS ,SURFACE tension ,HYDROPHOBIC surfaces - Abstract
Phenol-soluble modulins (PSMs) are amphipathic peptides produced by staphylococci that have multiple functions in pathogenesis. For example, they may function as cytotoxins and pro-inflammatory agents. Additionally, in a recent study we demonstrated that Staphylococcus aureus PSMs structure biofilms and cause dissemination during biofilm infection. Based on those results suggesting a surfactant-like mechanism by which PSMs work, we here propose that all PSM functions in pathogenesis arose from an original role in non-pathogenic surface colonization. This original role may have included overcoming surface tension in environments of strongly varying hydrophobicity and emulsification of hydrophobic molecules for use as food sources. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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