davidlevinchess.comLysine is believed to forestall the absorption of the arginine amino acid within the small intestine, hence putting a cease on the development and spread of the herpes virus in the body. The exception to the rule is the DOT1 household, members of which methylate K79 within the globular region of histone H3 and which are structurally not associated to SET-domain proteins 4 - 6 Latest work suggests that SET-domain-containing proteins methylate just a few proteins in addition to histones (see later)