Biological function and regulation of histone 4 lysine 20 methylation in DNA damage response

Author:

Kohi Sara Moghaddam,Feng Tingting,Tian YuanORCID,Zhu Wei-Guo

Abstract

AbstractCells are often under attack from various DNA-damaging agents. Accurate repair is required to protect cells from the genome instability induced by DNA lesions. DNA damage response (DDR) signaling involves sensitizing, transmitting, and repairing different types of damage within chromatin complexes. Chromatin is a highly ordered complex packed with repeating units of nucleosomes and linker DNA sequences. Chromatin structure, gene transcription, and various biological processes are regulated by histone post-translational modifications (PTMs), including acetylation, methylation, phosphorylation, and ubiquitylation. Of these, the involvement of lysine methylation, regulated by numerous lysine methyltransferases and demethylases, in the DDR has been extensively explored. In particular, histone 4 lysine 20 methylation is one of the most essential histone PTMs for biological processes and ensures genome integrity. In this review, we summarize the dynamics and modulations of histone lysine methylation during the DDR. We also comprehensively describe the functions, mechanisms, and regulation of H4K20 methylation and its modifying enzymes in response to DNA damage.

Funder

National Key R&D Program of China

Publisher

Springer Science and Business Media LLC

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