In medical study, when Lysine hydrochloride (the form it's metabolized finest from) is taken in concentrations of lower than 1250mg (2 x 625mg tablets) it has a limited impact on the Herpes and chilly sore virus - and when taken at a every day dose increased than 3000mg it's proven to be probably unsafe.

The exception to the rule is the DOT1 household, members of which methylate K79 in the globular area of histone H3 and that are structurally not related to SET-domain proteins 4 - 6 Recent work suggests that SET-domain-containing proteins methylate a couple of proteins in addition to histones (see later)