PSM-β is a active peptide , which can be isolated from Staplococcus epidermidis. PSM-β is an analog of staplococcal toxins, as well as a termed phenol-soluble modulin. PSM-β has bacteriostatic and poorly hemolytic properties[1][2].
[1]. Mehlin C, et al. An inflammatory polypeptide complex from Staplococcus epidermidis: isolation and characterization. J Exp Med. 1999 Mar 15;189(6):907-18.
[2]. Marchand A, et al. Anti-Legionella activity of staplococcal hemolytic peptides. Peptides. 2011 May;32(5):845-51.