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• W2034407306 endingPage "e0117471" @default.
• W2034407306 startingPage "e0117471" @default.
• W2034407306 abstract "HSV is a large double stranded DNA virus, capable of causing a variety of diseases from the common cold sore to devastating encephalitis. Although DNA within the HSV virion does not contain any histone protein, within 1 h of infecting a cell and entering its nucleus the viral genome acquires some histone protein (nucleosomes). During lytic infection, partial micrococcal nuclease (MNase) digestion does not give the classic ladder band pattern, seen on digestion of cell DNA or latent viral DNA. However, complete digestion does give a mono-nucleosome band, strongly suggesting that there are some nucleosomes present on the viral genome during the lytic infection, but that they are not evenly positioned, with a 200bp repeat pattern, like cell DNA. Where then are the nucleosomes positioned? Here we perform HSV-1 genome wide nucleosome mapping, at a time when viral replication is in full swing (6hr PI), using a microarray consisting of 50mer oligonucleotides, covering the whole viral genome (152kb). Arrays were probed with MNase-protected fragments of DNA from infected cells. Cells were not treated with crosslinking agents, thus we are only mapping tightly bound nucleosomes. The data show that nucleosome deposition is not random. The distribution of signal on the arrays suggest that nucleosomes are located at preferred positions on the genome, and that there are some positions that are not occupied (nucleosome free regions -NFR or Nucleosome depleted regions -NDR), or occupied at frequency below our limit of detection in the population of genomes. Occupancy of only a fraction of the possible sites may explain the lack of a typical MNase partial digestion band ladder pattern for HSV DNA during lytic infection. On average, DNA encoding Immediate Early (IE), Early (E) and Late (L) genes appear to have a similar density of nucleosomes." @default.
• W2034407306 created "2016-06-24" @default.
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• W2034407306 date "2015-02-24" @default.
• W2034407306 modified "2023-10-17" @default.
• W2034407306 title "Genome Wide Nucleosome Mapping for HSV-1 Shows Nucleosomes Are Deposited at Preferred Positions during Lytic Infection" @default.
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• W2034407306 doi "https://doi.org/10.1371/journal.pone.0117471" @default.
• W2034407306 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4339549" @default.
• W2034407306 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25710170" @default.
• W2034407306 hasPublicationYear "2015" @default.
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