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Regulation of sarT. The most probable interaction of the sarA/agr/sarT regulatory network as it is currently understood. SarA induces the P2 promoter of RNAII, which in turn induces expression of RNAIII (15). SarA and agr both act to repress expression of sarT; SarT in turn appears to repress expression of agr RNAIII and hla. An unknown element induces sarT, and sarA induces hla via an agr-independent pathway (7). It is possible that hla induction by SarA is via SarT.
