González María Eugenia
Unidad de Expresión Viral, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Carretera de Majadahonda-Pozuelo Km 2, Majadahonda, Madrid 28220, Spain.
Viruses. 2015 Aug 4;7(8):4352-68. doi: 10.3390/v7082824.
Viral protein U (Vpu) is a lentiviral viroporin encoded by human immunodeficiency virus type 1 (HIV-1) and some simian immunodeficiency virus (SIV) strains. This small protein of 81 amino acids contains a single transmembrane domain that allows for supramolecular organization via homoligomerization or interaction with other proteins. The topology and trafficking of Vpu through subcellular compartments result in pleiotropic effects in host cells. Notwithstanding the high variability of its amino acid sequence, the functionality of Vpu is well conserved in pandemic virus isolates. This review outlines our current knowledge on the interactions of Vpu with the host cell. The regulation of cellular physiology by Vpu and the validity of this viroporin as a therapeutic target are also discussed.
病毒蛋白U(Vpu)是一种由1型人类免疫缺陷病毒(HIV-1)和一些猿猴免疫缺陷病毒(SIV)毒株编码的慢病毒病毒孔蛋白。这种由81个氨基酸组成的小蛋白含有一个单一的跨膜结构域,可通过同源寡聚化或与其他蛋白相互作用形成超分子结构。Vpu在亚细胞区室中的拓扑结构和运输导致宿主细胞产生多效性效应。尽管其氨基酸序列具有高度变异性,但Vpu的功能在大流行病毒分离株中仍得到很好的保守。本综述概述了我们目前对Vpu与宿主细胞相互作用的认识。还讨论了Vpu对细胞生理学的调节以及这种病毒孔蛋白作为治疗靶点的有效性。