Methylation been found on a variety of lysine residues in varied histones: K4 (utilizing the one-letter amino-acid code for lysine), K9, lawyers in my area K27, K36 and K79 in histone H3, K20 in histone H4, K59 in the globular area of histone H4 2 and K26 of histone H1B three Several proteins answerable for the methylation of specific residues have been characterized, and all however one in every of these comprises a SET area