Histone 4 lysine 20 tri-methylation: a key epigenetic regulator in chromatin structure and disease

Chromatin is a vital and dynamic structure that is carefully regulated to maintain proper cell homeostasis. A great deal of this regulation is dependent on histone proteins which have the ability to be dynamically modified on their tails via various post-translational modifications (PTMs). While multiple histone PTMs are studied and often work in concert to facilitate gene expression, here we focus on the tri-methylation of histone H4 on lysine 20 (H4K20me3) and its function in chromatin structure, cell cycle, DNA repair, and development. The recent studies evaluated in this review have shed light on how H4K20me3 is established and regulated by various interacting partners and how H4K20me3 and the proteins that interact with this PTM are involved in various diseases. Through analyzing the current literature on H4K20me3 function and regulation, we aim to summarize this knowledge and highlights gaps that remain in the field.

Automated summary

Chromatin is regulated by histone proteins through various post-translational modifications, especially tri-methylation of histone H4 on lysine 20 (H4K20me3), which plays important roles in chromatin structure, cell cycle, DNA repair, and development. Recent studies have provided insights into the establishment and regulation of H4K20me3 and its involvement in various diseases through interactions with other proteins. This review aims to summarize the current knowledge of H4K20me3 function and regulation, as well as highlight remaining gaps in the field.