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Expression and localization of Bombyx mori nucleopolyhedrovirus GP37

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Abstract

Mitochondria play an essential role in intracellular energy metabolism. This study described the involvement of Bombyx mori nucleopolyhedrovirus (BmNPV) GP37 (BmGP37) in host mitochondria. Herein, the proteins associated with host mitochondria isolated from BmNPV-infected or mock-infected cells by two-dimensional gel electrophoresis were compared. One mitochondria-associated protein in virus-infected cells was identified as BmGP37 by liquid chromatography-mass spectrometry analysis. Furthermore, the BmGP37 antibodies were generated, which could react specifically with BmGP37 in the BmNPV-infected BmN cells. Western blot experiments showed that BmGP37 was expressed at 18 h post-infection and was verified as a mitochondria-associated protein. Immunofluorescence analysis demonstrated that BmGP37 localized to the host mitochondria during BmNPV infection. Furthermore, western blot analysis revealed that BmGP37 is a novel component protein of the occlusion-derived virus (ODV) of BmNPV. The present results indicated that BmGP37 is one of the ODV-associated proteins and may have important roles in host mitochondria during BmNPV infection.

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Data availability

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This work was supported by grants from JSPS KAKENHI (grant no. 20K06069) to MI. The authors are grateful to Dr. Ikeda for the kind gift of anti-VP39 antibody. The authors would like to thank Enago (www.enago.jp) for the English language review.

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Authors and Affiliations

  1. Department of Agrobiology and Bioresources, School of Agriculture, Utsunomiya University, Mine-Machi 350, Utsunomiya-Shi, Tochigi, 321-8505, Japan

    Shota Fujimoto, Kaito Fujimaki & Masashi Iwanaga

  2. Center of Bioscience Research and Education, Utsunomiya University, Mine-Machi 350, Utsunomiya-Shi, Tochigi, 321-8505, Japan

    Tomohiro Suzuki

  3. Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-Ku, Tokyo, 113-8657, Japan

    Susumu Katsuma

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  1. Shota Fujimoto
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Contributions

All authors contributed to the study conception and design. The experiments were conceived and designed by SF and MI. The experiments were performed by SF, KF, TS, SK, and MI. The paper was written by MI and SK.

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Correspondence to Masashi Iwanaga.

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This study was performed in accordance with institutional committee protocols of Utsunomiya University.

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Fujimoto, S., Fujimaki, K., Suzuki, T. et al. Expression and localization of Bombyx mori nucleopolyhedrovirus GP37. Virus Genes 59, 457–463 (2023). https://doi.org/10.1007/s11262-023-01983-3

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