Abstract:
:We previously demonstrated that Bombyx mori nucleopolyhedrovirus (BmNPV) multiplication is restricted in permissive BmN-4 cells upon coinfection with Hyphantria cunea NPV (HycuNPV). Here, we show that HycuNPV-encoded hycu-ep32 gene is responsible for the restricted BmNPV multiplication in HycuNPV-coinfected BmN-4 cells. The only homologue for hycu-ep32 is in Orgyia pseudotsugata NPV. hycu-ep32 could encode a polypeptide of 312 amino acids, and it contains no characteristic domains or motifs to suggest its possible functions. hycu-ep32 is an early gene, and Hycu-EP32 expression reaches a maximum by 6 h postinfection. hycu-ep32-defective HycuNPV, vHycuDeltaep32, was generated, indicating that hycu-ep32 is nonessential in permissive SpIm cells. In BmN-4 cells, HycuNPV infection resulted in a severe global protein synthesis shutdown, while vHycuDeltaep32 did not cause any specific protein synthesis shutdown. These results indicate that the restriction of BmNPV multiplication by HycuNPV is caused by a global protein synthesis shutdown induced by hycu-ep32 upon coinfection with HycuNPV.
journal_name
Virologyjournal_title
Virologyauthors
Shirata N,Ikeda M,Kobayashi Mdoi
10.1016/j.virol.2009.11.049subject
Has Abstractpub_date
2010-03-15 00:00:00pages
149-57issue
2eissn
0042-6822issn
1096-0341pii
S0042-6822(09)00786-7journal_volume
398pub_type
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