Verhagen Janneke, Hutchinson Ian, Elliott Gillian
Virus Assembly Group, Marie Curie Research Institute, Oxted, Surrey RH8 OTL, United Kingdom.
J Virol. 2006 Jan;80(2):1059-63. doi: 10.1128/JVI.80.2.1059-1063.2006.
Previous studies with transfected cells have shown that the herpes simplex virus type 1 (HSV-1) and bovine herpesvirus 1 (BHV-1) UL47 proteins shuttle between the nucleus and the cytoplasm. HSV-1 UL47 has also been shown to bind RNA. Here we examine the BHV-1 UL47 protein in infected cells using a green fluorescent protein-UL47-expressing virus. We show that UL47 is detected in the nucleus early in infection. We use fluorescence loss in photobleaching to show that nuclear UL47 undergoes rapid nucleocytoplasmic shuttling. Furthermore, we demonstrate that actinomycin D inhibits the reaccumulation of UL47 in the nuclei of infected cells. These results suggest that UL47 exhibits behavior similar to that of previously characterized RNA-transporting proteins.
先前对转染细胞的研究表明,单纯疱疹病毒1型(HSV-1)和牛疱疹病毒1型(BHV-1)的UL47蛋白在细胞核和细胞质之间穿梭。HSV-1 UL47也已被证明能结合RNA。在这里,我们使用表达绿色荧光蛋白-UL47的病毒来检测感染细胞中的BHV-1 UL47蛋白。我们发现,在感染早期,细胞核中可检测到UL47。我们利用光漂白荧光损失技术表明,细胞核中的UL47会进行快速的核质穿梭。此外,我们证明放线菌素D可抑制UL47在感染细胞核中的重新积累。这些结果表明,UL47的行为与先前已鉴定的RNA转运蛋白相似。