Lysine for cats is much like Vitamin C for people.

One of the building blocks of protein, lysine is equipped by many meals—notably purple meats, fish and dairy products. Some folks get canker sores frequently, whereas others could by no means have one. Methylation been discovered on a range of lysine residues in various histones: K4 (using the single-letter amino-acid code for lysine), K9, 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 accountable for the methylation of specific residues have been characterised, and all however one of these accommodates a SET area