The early UL31 gene of equine herpesvirus 1 encodes a single-stranded DNA-binding protein that has a nuclear localization signal sequence at the C-terminus.

The early UL31 gene of equine herpesvirus 1 encodes a single-stranded DNA-binding protein that has a nuclear localization signal sequence at the C-terminus.
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DOI:
10.1016/j.virol.2012.05.031
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发表时间:
2012-10-25
期刊:
影响因子:
3.7
通讯作者:
Kim SK
Kim SK
中科院分区:
医学3区
文献类型:
--
作者:
Kim S;Ahn BC;O'Callaghan DJ;Kim SK

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马疱疹病毒1型(EHV-1)的UL31蛋白(UL31P)的氨基酸序列与单纯疱疹病毒1型(HSV-1)的ICP8的氨基酸序列具有同源性。在这里,我们表明 UL31 基因被 IEP 和 UL5P (EICP27) 协同反式激活。感染后 6 小时 (hpi) 检测 EHV-1 感染细胞中的 UL31 RNA 转录物和 UL31P 以及代谢抑制测定表明 UL31 是一个早期基因。在凝胶迁移分析中,与双链 DNA 相比,UL31P 优先与单链 DNA 结合。绿色荧光蛋白 (GFP)-UL31 融合蛋白的亚细胞定位表明,UL31P 的 C 端 32 个氨基酸残基负责核定位。这些发现可能有助于确定 UL31P 单链 DNA 结合蛋白在 EHV-1 DNA 复制中的作用。
The amino acid sequence of the UL31 protein (UL31P) of equine herpesvirus 1 (EHV-1) has homology to that of the ICP8 of herpes simplex virus type 1 (HSV-1). Here we show that the UL31 gene is synergistically trans-activated by the IEP and the UL5P (EICP27). Detection of the UL31 RNA transcript and the UL31P in EHV-1-infected cells at 6 h post infection (hpi) as well as metabolic inhibition assays indicated that UL31 is an early gene. The UL31P preferentially bound to single-stranded DNA over double-stranded DNA in gel shift assays. Subcellular localization of the green fluorescent protein (GFP)-UL31 fusion proteins revealed that the C-terminal 32 amino acid residues of the UL31P are responsible for the nuclear localization. These findings may contribute to defining the role of the UL31P single-stranded DNA-binding protein in EHV-1 DNA replication.
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