Coenzyme Q biosynthesis in the biopesticide Shenqinmycin-producing Pseudomonas aeruginosa strain M18

  • Hai-Xia JiangEmail author
  • Jing Wang
  • Lian Zhou
  • Zi-Jing Jin
  • Xue-Qiang Cao
  • Hao Liu
  • Hai-Feng Chen
  • Ya-Wen He
Genetics and Molecular Biology of Industrial Organisms - Original Paper


Coenzyme Q (ubiquinone) is a redox-active isoprenylated benzoquinone commonly found in living organisms. The biosynthetic pathway for this lipid has been extensively studied in Escherichia coli and Saccharomyces cerevisiae; however, little is known in Pseudomonas aeruginosa. In this study, we observed that CoQ9 is the predominant coenzyme Q synthesized by the Shenqinmycin-producing strain M18. BLASTP and domain organization analyses identified 15 putative genes for CoQ biosynthesis in M18. The roles of 5 of these genes were genetically and biochemically investigated. PAM18_4662 encodes a nonaprenyl diphosphate synthase (Nds) and determines the number of isoprenoid units of CoQ9 in M18. PAM18_0636 (coq7PA) and PAM18_5179 (ubiJPA) are essential for aerobic growth and CoQ9 biosynthesis. Deletion of ubiJPA, ubiBPA and ubiKPA led to reduced CoQ biosynthesis and an accumulation of the CoQ9 biosynthetic intermediate 3-nonaprenylphenol (NPP). Moreover, we also provide evidence that the truncated UbiJPA interacts with UbiBPA and UbiKPA to affect CoQ9 biosynthesis by forming a regulatory complex. The genetic diversity of coenzyme Q biosynthesis may provide targets for the future design of specific drugs to prevent P. aeruginosa-related infections.


Pseudomonas aeruginosa Coenzyme Q9 Nonaprenyl diphosphate synthase (Nds) Coq7PA UbiJPA 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Supplementary material

10295_2019_2179_MOESM1_ESM.pdf (638 kb)
Supplementary material 1 (PDF 637 kb)


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Copyright information

© Society for Industrial Microbiology and Biotechnology 2019

Authors and Affiliations

  • Hai-Xia Jiang
    • 1
    Email author
  • Jing Wang
    • 1
  • Lian Zhou
    • 2
  • Zi-Jing Jin
    • 1
  • Xue-Qiang Cao
    • 1
  • Hao Liu
    • 1
  • Hai-Feng Chen
    • 1
  • Ya-Wen He
    • 1
  1. 1.State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghaiChina
  2. 2.Zhiyuan Innovation Research Centre, Student Innovation Centre, Zhiyuan CollegeShanghai Jiao Tong UniversityShanghaiChina

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