Transcriptional Regulation Between the Two Global Regulators RovA and CRP in Yersinia pestis biovar Microtus
Yersinia pestis is a dangerous bacterial pathogen that can cause plague. Both RovA and cyclic AMP receptor protein (cAMP-CRP) are required for regulating biofilm- and virulence-related genes in Y. pestis. In this study, the transcriptional regulation between RovA and cAMP-CRP were analyzed by using primer extension, quantitative RT-PCR, LacZ fusion, and electrophoretic mobility shift assay. The results indicated that RovA repressed crp transcription in an indirect manner, while that RovA had no regulatory action on cyaA at the transcriptional level. In addition, cAMP-CRP did not regulate the transcription of rovA. Taken together with our previous results, complex regulatory interactions of RovA, cAMP-CRP, and PhoP/PhoQ in Y. pestis were revealed, which would promote us gain deeper understanding about coordinative modulation of biofilm- and virulence-related regulator genes.
This work was supported by the National Natural Science Foundation of China (81801984), and by the Natural Science Foundation of Hubei Province (2018CFB184), and by the Hubei Province health and family planning scientific research project (WJ2018H0070).
- 13.Rickman L, Scott C, Hunt DM, Hutchinson T, Menendez MC, Whalan R, Hinds J, Colston MJ, Green J, Buxton RS (2005) A member of the cAMP receptor protein family of transcription regulators in Mycobacterium tuberculosis is required for virulence in mice and controls transcription of the rpfA gene coding for a resuscitation promoting factor. Mol Microbiol 56:1274–1286CrossRefGoogle Scholar