Nonetheless, each analysis research, with professional or con results, concluded that Lysine is safe for most individuals, with some possible uncomfortable side effects of digestive upset (abdomen pain or diarrhea). Methylation been found on a range of lysine residues in various histones: K4 (using the only-letter amino-acid code for lysine), solicitor article K9, K27, K36 and K79 in histone H3, K20 in histone H4, K59 within the globular area of histone H4 2 and K26 of histone H1B 3 A number of proteins accountable for the methylation of particular residues have been characterized, and all however one in all these contains a SET area