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Int J Immunogenet 2007, 34:181–191.CrossRefPubMed Authors’ contributions EW designed and performed the experiments, analyzed the data and wrote the manuscript. VX-680 cost JCO and SDG contributed to the discussion and data analysis. PMS designed the research and assisted in writing the manuscript. All authors read and approved the final manuscript.”
“Background Plague, caused by Yesinia pestis, is a zoonotic disease that threatened public health seriously. The three pathogenic triclocarban Yersinia species, Y. pestis, Y. pseudotuberculosis, and Y. enterocolitica, share a type III Erismodegib secretion system (T3SS) that is composed of a secretion machinery,

a set of translocation proteins, a control system, and six Yop effector proteins [1, 2]. Through the T3SS, pathogenic yersiniae inject effectors into the cytosol of eukaryotic cells when docking at the surface of host cell. The injected Yops perturb the signaling cascades that activate the processes of phagocytosis, cytokine release and respiratory burst. As a result, phagocytosis is inhibited, recruitment of PMNs and monocyte-derived macrophages is reduced, and lymphocyte proliferation is prevented. The cyclic AMP receptor protein (CRP) is a global regulator that controls the transcription initiation for more than 100 bacterial genes/operons [3]. CRP is activated by cyclic AMP (cAMP), forming the cAMP-CRP complex. This complex binds a symmetrical consensus DNA sequence TGTGA-N6-TCACA (known as the CRP box sequence) located within the upstream promoter regions. The CRP-promoter DNA interaction is crucial for the regulation of target genes.