They are both nucleic acids. Regarding structure, DNA and RNA are similar because they are both built of nucleotides, structures consisting of one nucleobase, a sugar (ribose or deoxyribose respectively) and a phosphate group.
Recent intake recommendations to meet the lysine requirement range from 64 to 30 mg/(kg Â· d) for 0.5-y infants and adults (>18 y), respectively. Lysine intake in the Western human diet is in the range 40â180 mg/(kg Â· d). An upper limit of 300â400 mg/(kg Â· d) can be considered in humans. l-Lysine is a basic amino acid characterized by the presence of an amino group at the end of a 4-carbon aliphatic side chain [-(CH 2) 4-NH 3 +].
1 Canker sores. 2  Early research suggests that taking 500 mg of lysine daily prevents canker sores and 4000 mg daily decreases the length of canker sores. 3  Diabetes. 4  Some evidence shows that taking lysine daily for 2 months does not affect blood sugar levels in people with diabetes. For cold sores (herpes simplex labialis): 1000 mg daily for 12 months and 1000 mg three times daily for 6 months. 2  For treating cold sores (herpes simplex labialis): a specific combination of lysine plus zinc oxide and 14 other ingredients (Super Lysine Plus +) applied every 2 hours for 11 days has been used.