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Staphyloxanthin, a carotenoid in S. aureus, is a powerful antioxidant against oxidative stresses. The crtOPQMN operon driving pigment synthesis is under the control of σB. CspA, a cold shock protein, is known to control σB activity. To ascertain genes that regulate cspA, we screened a transposon library that exhibited reduced cspA expression and pigmentation. We found that the adaptor protein YjbH...
mazEF modules encode toxin–antitoxin pairs that are involved in the bacterial stress response through controlled and specific degradation of mRNA. Staphylococcus aureus MazF and MazE constitute a unique toxin–antitoxin module under regulation of the sigB operon. A MazF‐type mRNA interferase is combined with an antitoxin of unknown fold. Crystals of S. aureus MazF (SaMazF) were grown in space group...
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