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The movement of some plant viruses are accomplished by three proteins encoded by a triple gene block (TGB). The second protein (TGBp2) in the block is a transmembrane protein. This study was aimed to unravel the mechanism underlying the relatively inefficient cell-to-cell movement of Bamboo mosaic virus (BaMV) caused by amino acid substitutions for the three Cys residues, Cys-109, Cys-112 and Cys-119,...
During polyomavirus infection, the viral DNA adopts histones from host cells and forms minichromosomes as an important part of the viral life cycle. However, the detailed mechanisms of this histone incorporation remain unclear. Here, we profiled the histone posttranslational modifications (PTMs) in BKPyV minichromosomes and in the chromatin of BKPyV host cells. Through Triton-acetic acid-urea (TAU)-PAGE...
BK virus, a human polyomavirus, may cause nephritis and urological disorders in patients who have undergone renal transplantation. Little is known about the characteristics of the BK viral proteins. In the current study, BK viral proteins were characterized by immunoblotting and LC-MS/MS. The results revealed that BK virus is composed of three structural proteins, VP1, VP2, and VP3 and four cellular...
Sendai virus V protein is not essential for virus replication in cultured cells but is essential for efficient virus replication and pathogenesis in mice, indicating that the V protein has a luxury function to facilitate virus propagation in mice. This was discovered in the Z strain, an egg-adapted avirulent laboratory strain. In the present study, we reexamined the function of Sendai virus V protein...
The V protein of Sendai virus (SeV) is nonessential for virus replication in cell culture but indispensable for viral pathogenicity in mice. At the C terminus of the V protein, there are amino acid residues conserved among the members of the Paramyxovinae subfamily that are clustered in three regions: region I, just downstream of the RNA editing site; and regions II and III, cysteine-rich zinc-finger-like...
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