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 +].
The therapeutic dosage of lysine for herpes, cancer, osteoporosis or other diseases is 3 to 9 grams per day for adults. This large dosage should be taken throughout the day in smaller doses. A preventative dosage would be 1 gram of lysine three times a day to prevent recurrence of herpes, cancer or osteoporosis. The pediatric dosage of lysine for children 2 to 12 years of age is 10 milligrams for every pound of body weight. So if the child is 50 pounds, the dosage is 500 milligrams, or a half gram per day.