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Korean Society for Biochemistry and Molecular Biology (생화학분자생물학회)
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Helicoverpa armigera Nucleopolyhedrovirus ORF80 Encodes a Late, Nonstructural Protein

  • Wang, Dun (Institute of Insect Sciences, Zhejiang University) ;
  • Zhang, Chuan-Xi (Institute of Insect Sciences, Zhejiang University)
  • Published : 2007.01.31
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Abstract

The Helicoverpa armigera nucleopolyhedrovirus (HearNPV) ORF80 (ha80) has 765 bp encoding a protein with approximately 254 amino acids and a predicted molecular weight of 30.8 kDa. Homologues of ha80 are found in most baculovirus sequences, including those from lepidopteran NPVs, lepidopteran granuloviruses (GVs), hymenopteran baculoviruses, and one dipteran baculovirus, yet their functions remain unclear. In this study we characterized ha80, and showed that it was transcribed late in infected host cells (HzAM1). The product of ha80 was a 31 kDa protein that was not a structural protein of budded virus (BV) or occlusion-derived virus (ODV) particles. Ha80 was first detected in the cytoplasm of infected HzAM1 cells at 12 h p.i., and was observed in the nucleus at later stages of infection, suggesting that it may be involved in transporting viral proteins into the host cell nucleus or play its roles in the nucleus.

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References

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