Laboratorio de Virología Molecular, Instituto Milenio de Inmunología e Inmunoterapia, Centro de Investigaciones Médicas, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
J Virol. 2012 Feb;86(4):2176-87. doi: 10.1128/JVI.06223-11. Epub 2011 Dec 7.
The small mRNA (SmRNA) of all Bunyaviridae encodes the nucleocapsid (N) protein. In 4 out of 5 genera in the Bunyaviridae, the smRNA encodes an additional nonstructural protein denominated NSs. In this study, we show that Andes hantavirus (ANDV) SmRNA encodes an NSs protein. Data show that the NSs protein is expressed in the context of an ANDV infection. Additionally, our results suggest that translation initiation from the NSs initiation codon is mediated by ribosomal subunits that have bypassed the upstream N protein initiation codon through a leaky scanning mechanism.
所有布尼亚病毒科的小 mRNA(SmRNA)编码核衣壳(N)蛋白。在布尼亚病毒科的 5 个属中的 4 个属中,SmRNA 编码另一种非结构蛋白,称为 NSs。在这项研究中,我们表明安第斯山出血热病毒(ANDV)SmRNA 编码 NSs 蛋白。数据表明,NSs 蛋白在 ANDV 感染的情况下表达。此外,我们的结果表明,从 NSs 起始密码子开始的翻译起始是通过核糖体亚基介导的,这些核糖体亚基通过渗漏扫描机制绕过了上游的 N 蛋白起始密码子。