Figure 1. Exotoxin-synthesis-inhibition by hemoglobin (Hbg) peptide-1 (native peptide (A, B) and Hbg-2 (peptide with scrambled sequence; C,D) effects on S. aureus MN8 growth and TSST-1 production.

S. aureus MN8 cultures were incubated at 37°C for 9 h with shaking 200 revolutions per minute in the presence of indicated amounts of anti-infective peptides. Subsequently, CFUs/ml were determined by plate counts, and TSST-1 amounts were quantified by Western immunoblotting.