Abstract

The establishment and faithful maintenance of epigenetic information in the context of chromatin are crucial for a great number of biologic phenomena, including position effect variegation, Polycomb silencing, X-chromosome inactivation and genomic imprinting. However, mechanisms by which that the correct histone modification patterns propagate into daughter cells during mitotic divisions remain to be elucidated. The partitioning pattern of parental histone H3–H4 tetramers is a critical question toward our understanding of the epigenetic inheritance. In this review, we discuss why the histone H3–H4 tetramer split decision matters.

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