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The core histones, H2A, H2B, H3 and H4, undergo post‐translational modifications (PTMs) including lysine acetylation, methylation and ubiquitylation, arginine methylation and serine phosphorylation. Lysine residues may be mono‐, di‐ and trimethylated, the latter resulting in an addition of mass to the protein that differs from acetylation by only 0.03639 Da, but that can be distinguished either on...
Small‐ubiquitin‐like modifier (SUMO) is a posttranslational modifier of protein substrates at lysine residues that conjugates to proteins in response to various changes in the cell. As a result of SUMO modification, marked changes in transcription regulation, DNA repair, subcellular localization and mitosis, among other cellular processes, are known to occur. However, although the identification of...
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