Figure 3From: Identification and characterization of PhoP regulon members in Yersinia pestis biovar MicrotusControl of the uspA and uspB genes by PhoP. The PhoP binding sites of the uspA and uspB genes were shown. The letters with arrows above indicated the PhoP box. "+1" indicated the first base pair within the coding region of uspA, while the upstream base pairs were shown with the minus numbers. The transcription start sites were displayed as well.Back to article page