Yang et al find that phase separation of the Epstein-Barr virus nuclear antigen 2 (EBNA2) is involved in the formation of accessible chromatin domains of the host genome. They also find that EBNA2 recruits histone acetyltransferase to promote histone acetylation on accessible chromatin regions and regulate gene expression and that these two functions are performed by the N- and Cterminus respectively.
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