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KSHV encoded ORF59 modulates histone arginine methylation of the viral genome to promote viral reactivation

PLoS Pathog.. 2017-07; 
Strahan RC, McDowell-Sargent M, Uppal T, Purushothaman P, Verma SC.
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摘要

Kaposi's sarcoma associated herpesvirus (KSHV) persists in a highly-ordered chromatin structure inside latently infected cells with the majority of the viral genome having repressive marks. However, upon reactivation the viral chromatin landscape changes into 'open' chromatin through the involvement of lysine demethylases and methyltransferases. Besides methylation of lysine residues of histone H3, arginine methylation of histone H4 plays an important role in controlling the compactness of the chromatin. Symmetric methylation of histone H4 at arginine 3 (H4R3me2s) negatively affects the methylation of histone H3 at lysine 4 (H3K4me3), an active epigenetic mark deposited on the viral chromatin during reactivatio... More

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