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The staphylococcal accessory regulator SarA and the alternative sigma factor sigma(B) have been previously identified as positive regulators, and IcaR as a negative regulator, of icaADBC expression. Here, we show that in Staphylococcus aureus SarA and sigma(B) are also required for icaR expression and that IcaR does not have a significant effect on its own expression.
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Cerca et al. (2008) studied this question.
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