Abstract
Menaquinone is an essential cofactor in the electron-transfer pathway for bacteria. Menaquinone is biosynthesized from chorismate using either the well-known canonical pathway established by pioneering studies in model microorganisms or the futalosine pathway, which we discovered in Streptomyces. Because Helicobacter pylori, which causes stomach cancer, uses the futalosine pathway and most beneficial intestinal bacteria including lactobacilli use the canonical pathway, the futalosine pathway will be a great target to develop antibiotics specific for H. pylori. Here, we searched for such compounds from metabolites produced by actinomycetes and identified pulvomycin from culture broth of Streptomyces sp. K18-0194 as a specific inhibitor of the futalosine pathway.
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Acknowledgements
This work was supported by Grants-in-Aid for Scientific Research on Innovative Areas from MEXT, Japan (JSPS KAKENHI Grant Number JP16H06452 to TD), Grants-in-Aid for Scientific Research from JSPS (JP18H03937 to TD JP18K05449 to YO), and the Toyota Riken Scholar Program to YO. We also thank Dr Eri Fukushi at the GC-MS and NMR Laboratory, Graduate School of Agriculture, Hokkaido University for acquiring NMR spectra. We thank Robbie Lewis, MSc, from Edanz (https://jp.edanz.com/) for editing a draft of this manuscript.
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TD and YO conceived and designed the experiments. YO and SU isolated and determined the compounds. YI and KN isolated, maintained and characterized the strain. YO and TD wrote the paper. All authors discussed the results and contributed to the final manuscript.
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Ogasawara, Y., Umetsu, S., Inahashi, Y. et al. Identification of pulvomycin as an inhibitor of the futalosine pathway. J Antibiot 74, 825–829 (2021). https://doi.org/10.1038/s41429-021-00465-8
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DOI: https://doi.org/10.1038/s41429-021-00465-8