Figure 5From: Identification and characterization of an operon, msaABCR, that controls virulence and biofilm development in Staphylococcus aureus Phenotypic analysis of the msaABCR deletion mutant complemented with the frameshift msaC mutation. The msaABCR operon construct containing the frameshift msaC mutant (msaABCR _fsmut msaC) was introduced in the msaABCR operon deletion mutant. The following phenotypic assays were performed: (A) pigmentation; (B) production of extracellular proteases; and (C) biofilm formation. Values are shown as the percent activity relative to the wild type strain USA300 LAC, which was set as 100%. Values represent the average of three independent assays, which were done in triplicate. Results are reported as the mean ± S.E.Back to article page