Many players, one goal: how chromatin states are inherited during cell division

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Abstract
Replication of genomic material is a process that requires not only high fidelity in the duplication of DNA sequences but also inheritance of the chromatin states. In the last few years enormous effort has been put into elucidating the mechanisms involved in the correct propagation of chromatin states. From all these studies it emerges that an epigenetic network is at the base of this process. A coordinated interplay between histone modifications and histone variants, DNA methylation, RNA components, ATP-dependent chromatin remodeling, and histone-specific assembly factors regulates establishment of the replication timing program, initiation of replication, and propagation of chromatin domains. The aim of this review is to examine, in light of recent findings, how so many players can be coordinated with each other to achieve the same goal, a correct inheritance of the chromatin state.Key words: replication, histone variants, histone modification, DNA methylation, chromatin remodeling factors.