<p>Summary of all novel PTMs identified on H1 (<b>A</b>), H2A (<b>B</b>), H2B (<b>C</b>), H3 (<b>D</b>) <b>and H4</b> (<b>E</b>). Sites of PTMs are indicated by A for acetylation, B for butyrylation, Cr for crotonylation, Me1, Me2 and Me3 for mono-, di- and trimethylation, P for phosphorylation and Pr for propionylation. Residues are numbered starting with the first residue after the cleaved methionine. Canonical H1, H2A, H2B and H3 histones are shown which represent sequences common across all subtypes.</p
