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. 2011 Jun;193(12):2948–2958. doi: 10.1128/JB.01517-10

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Copyright © 2011, American Society for Microbiology

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Fig. 7. — Role of sarA and extracellular proteases in the agr-dependent PSM phenotype of USA300 isolates. The PSM phenotype was assessed in stationary-phase cultures by HPLC. (A) The amount of each individual class (alpha- and beta-toxins versus delta-toxin) of PSM in stationary-phase cultures was assessed in both their formylated and unformylated forms by HPLC. The results observed with strain Newman were set to 100%, with the amounts observed in U1782 and isogenic sarA mutants generated in both strains (S) and grown with (S^PI versus S^PI2) and without protease inhibitors shown relative to these amounts. (B) The amounts of each individual class (alpha- and beta-toxin versus delta-toxin) of PSM in both their formylated and unformylated forms were combined, and the amount of each class observed in the USA300 isolate U1794 (WT) was set to 100%. The results observed in each of the indicated U1794 mutants are shown relative to these amounts.