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- W2125471316 abstract "Using in situ hybridization labelling methods, we have determined that the herpes simplex virus type 1 immediate-early protein IE63 (ICP27) affects the cellular localization of virus transcripts. Intronless transcripts from the IE63, UL38, and UL44 genes are rapidly exported to and accumulate in the cytoplasm throughout infection, in either the presence or absence of IE63 expression. The intron-containing transcripts from the IE110 and UL15 genes, while initially cytoplasmic, are increasingly retained in the nucleus in distinct clumps as infection proceeds, and the clumps colocalize with the redistributed small nuclear ribonucleoprotein particles. Infections with the IE63 mutant virus 27-lacZ demonstrated that in the absence of IE63 expression, nuclear retention of intron-containing transcripts was lost. The nuclear retention of UL15 transcripts, which demonstrated both nuclear and cytoplasmic label, was not as pronounced as that of the IE110 transcripts, and we propose that this is due to the late expression of UL15. Infections with the mutant virus 110C1, in which both introns of IE110 have been precisely removed (R.D. Everett, J. Gen. Virol. 72:651-659, 1991), demonstrated IE110 transcripts in both the nucleus and the cytoplasm; thus, exon definition sequences which regulate viral RNA transport are present in the IE110 transcript. By in situ hybridization a stable population of polyadenylated RNAs was found to accumulate in the nucleus in spots, most of which were separate from the small nuclear ribonucleoprotein particle clumps. The IE63 protein has an involvement, either direct or indirect, in the regulation of nucleocytoplasmic transport of viral transcripts, a function which contrasts with the recently proposed role of herpes simplex virus type 1 Us11 in promoting the nuclear export of partially spliced or unspliced transcripts (J.-J. Diaz, M. Duc Dodon, N. Schaerer-Uthurraly, D. Simonin, K. Kindbeiter, L. Gazzolo, and J.-J. Madjar, Nature [London] 379:273-277, 1996), the significance of which is discussed." @default.
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- W2125471316 date "1996-08-01" @default.
- W2125471316 modified "2023-10-12" @default.
- W2125471316 title "Herpes simplex virus type 1 protein IE63 affects the nuclear export of virus intron-containing transcripts" @default.
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- W2125471316 doi "https://doi.org/10.1128/jvi.70.8.5255-5265.1996" @default.
- W2125471316 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/190482" @default.
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- W2125471316 hasPublicationYear "1996" @default.
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