These tails are topic to a number of submit-translational covalent modifications, together with acetylation, phosphorylation, ubiquitination, sumoylation and methylation (reviewed in 1 ). Methylation been found on a variety of lysine residues in numerous histones: K4 (utilizing the one-letter amino-acid code for lysine), K9, K27, K36 and K79 in histone H3, lawyer K20 lawyer in my area histone H4, K59 within the globular area of histone H4 2 and K26 of histone H1B three A number of proteins answerable for the methylation of particular residues have been characterised, and all however considered one of these incorporates a SET domain