Involved in SarA attenuation. Affects resistance to oxacillin and teicoplanin, as well as the synthesis of virulence factors. Expression peaks in the early exponential growth phase and decreases towards the late exponential and stationary phases. Induced by cell wall-active agents, such as beta-lactams, glycopeptides, bacitracin, fosfomycin and lysostaphin. Belongs to the LytR/CpsA/Psr (LCP) family.