Regulatory Feedback Loop of Two phz Gene Clusters in Pseudomonas sp. M18
Author Information
Author(s): Li Yaqian, Du Xilin, Lu Zhi John, Wu Daqiang, Zhao Yilei, Ren Bin, Huang Jiaofang, Huang Xianqing, Xu Yuhong, Xu Yuquan
Primary Institution: State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
Hypothesis
What is the correlation between the expressions of two phz gene clusters in Pseudomonas sp. M18?
Conclusion
The study found that PCA produced by the phzA2-G2 gene cluster can activate the expression of the phzA1-G1 gene cluster, creating a regulatory feedback loop.
Supporting Evidence
- PCA produced from the phzA2-G2 gene cluster can auto-regulate its own expression.
- The expression of phzA1-G1 is primarily blocked at the post-transcriptional level.
- Exogenous PCA can induce higher PCA production in both mutant strains.
Takeaway
This study shows that two gene clusters in a bacteria can help each other produce a special chemical that helps them grow and fight off bad germs.
Methodology
The researchers created mutants of the two phz gene clusters and measured their growth and PCA production to study the regulatory mechanisms.
Digital Object Identifier (DOI)
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