RRC ID 33124
著者 Ito H, Bando H, Shimada T, Katsuma S.
タイトル The BIR and BIR-like domains of Bombyx mori nucleopolyhedrovirus IAP2 protein are required for efficient viral propagation.
ジャーナル Biochem Biophys Res Commun
Abstract The baculovirus Bombyx mori nucleopolyhedrovirus (BmNPV) possesses two genes, iap1 and iap2, which encode inhibitor of apoptosis (IAP) proteins. We previously showed that although both genes are dispensable for viral propagation, iap2 is required for efficient viral propagation in cultured cells. BmNPV IAP2 contains three putative functional domains: a baculovirus IAP repeat (BIR), a BIR-like (BIRL) domain, and a RING finger domain. To identify the domain affecting viral growth, we generated a series of BmNPV bacmids expressing iap2 derivatives lacking one or two domains, or possessing a single amino acid substitution to abolish IAP2 ubiquitin ligase activity. We examined their properties in both cultured cells and B. mori larvae. We found that either the BIR or BIRL domain of IAP2 plays an important role in BmNPV infection, and that the RING finger domain, which is required for ubiquitin ligase activity, does not greatly contribute to BmNPV propagation. This is the first study to identify functional domains of the baculovirus IAP2 protein.
巻・号 454(4)
ページ 581-7
公開日 2014-11-28
DOI 10.1016/j.bbrc.2014.10.132
PII S0006-291X(14)01952-4
PMID 25450697
MeSH Animals Bombyx / virology* Cells, Cultured Inhibitor of Apoptosis Proteins / chemistry* Inhibitor of Apoptosis Proteins / genetics Inhibitor of Apoptosis Proteins / metabolism* Nucleopolyhedroviruses / growth & development* Nucleopolyhedroviruses / metabolism* Viral Proteins / chemistry* Viral Proteins / genetics Viral Proteins / metabolism* Virus Replication*
IF 2.985
引用数 6
WOS 分野 BIOPHYSICS BIOCHEMISTRY & MOLECULAR BIOLOGY
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