Methylation been found on a range of lysine residues in varied histones: K4 (utilizing the one-letter amino-acid code for lysine), K9, K27, K36 and K79 in histone H3, K20 in histone H4, solicitor uk K59 in the globular area of histone H4 2 and K26 of histone H1B three Several proteins accountable for the methylation of specific residues have been characterized, and all but one among these accommodates a SET domain