Record Information
Version1.0
StatusDetected and Quantified
Creation Date2020-10-27 23:28:53 UTC
Update Date2024-04-30 19:30:58 UTC
Metabolite IDMMDBc0000059
Metabolite Identification
Common NameL-Lysine
DescriptionL-lysine is an essential amino acid. Normal requirements for lysine have been found to be about 8 g per day or 12 mg/kg in adults. Children and infants need more, 44 mg/kg per day for an eleven to-twelve-year old, and 97 mg/kg per day for three-to six-month old. Lysine is highly concentrated in muscle compared to most other amino acids. Lysine is high in foods such as wheat germ, cottage cheese and chicken. Of meat products, wild game and pork have the highest concentration of lysine. Fruits and vegetables contain little lysine, except avocados. Normal lysine metabolism is dependent upon many nutrients including niacin, vitamin B6, riboflavin, vitamin C, glutamic acid and iron. Excess arginine antagonizes lysine. Several inborn errors of lysine metabolism are known, such as cystinuria, hyperdibasic aminoaciduria I, lysinuric protein intolerance, propionic acidemia, and tyrosinemia I. Most are marked by mental retardation with occasional diverse symptoms such as absence of secondary sex characteristics, undescended testes, abnormal facial structure, anemia, obesity, enlarged liver and spleen, and eye muscle imbalance. Lysine also may be a useful adjunct in the treatment of osteoporosis. Although high protein diets result in loss of large amounts of calcium in urine, so does lysine deficiency. Lysine may be an adjunct therapy because it reduces calcium losses in urine. Lysine deficiency also may result in immunodeficiency. Requirements for this amino acid are probably increased by stress. Lysine toxicity has not occurred with oral doses in humans. Lysine dosages are presently too small and may fail to reach the concentrations necessary to prove potential therapeutic applications. Lysine metabolites, amino caproic acid and carnitine have already shown their therapeutic potential. Thirty grams daily of amino caproic acid has been used as an initial daily dose in treating blood clotting disorders, indicating that the proper doses of lysine, its precursor, have yet to be used in medicine. Low lysine levels have been found in patients with Parkinson's, hypothyroidism, kidney disease, asthma and depression. The exact significance of these levels is unclear, yet lysine therapy can normalize the level and has been associated with improvement of some patients with these conditions. Abnormally elevated hydroxylysines have been found in virtually all chronic degenerative diseases and coumadin therapy. The levels of this stress marker may be improved by high doses of vitamin C. Lysine is particularly useful in therapy for marasmus (wasting) and herpes simplex. It stops the growth of herpes simplex in culture, and has helped to reduce the number and occurrence of cold sores in clinical studies. Dosing has not been adequately studied, but beneficial clinical effects occur in doses ranging from 100 mg to 4 g a day. Higher doses may also be useful, and toxicity has not been reported in doses as high as 8 g per day. Diets high in lysine and low in arginine can be useful in the prevention and treatment of herpes. Some researchers think herpes simplex virus is involved in many other diseases related to cranial nerves such as migraines, Bell's palsy and Meniere's disease. Herpes blister fluid will produce fatal encephalitis in the rabbit (http://www.dcnutrition.com).
Structure
Synonyms
ValueSource
(S)-2,6-Diaminohexanoic acidChEBI
(S)-alpha,epsilon-Diaminocaproic acidChEBI
(S)-LysineChEBI
6-Ammonio-L-norleucineChEBI
KChEBI
L-2,6-Diaminocaproic acidChEBI
L-LysinChEBI
LysChEBI
LysinaChEBI
LysineChEBI
Lysine acidChEBI
LysinumChEBI
2,6-Diaminohexanoic acidKegg
(S)-2,6-DiaminohexanoateGenerator
(S)-a,epsilon-DiaminocaproateGenerator
(S)-a,epsilon-Diaminocaproic acidGenerator
(S)-alpha,epsilon-DiaminocaproateGenerator
(S)-Α,epsilon-diaminocaproateGenerator
(S)-Α,epsilon-diaminocaproic acidGenerator
L-2,6-DiaminocaproateGenerator
2,6-DiaminohexanoateGenerator
(+)-S-LysineHMDB
(S)-2,6-Diamino-hexanoateHMDB
(S)-2,6-Diamino-hexanoic acidHMDB
(S)-a,e-DiaminocaproateHMDB
(S)-a,e-Diaminocaproic acidHMDB
6-Amino-aminutrinHMDB
6-Amino-L-norleucineHMDB
a-LysineHMDB
alpha-LysineHMDB
AminutrinHMDB
H-Lys-OHHMDB
L-(+)-LysineHMDB
L-2,6-DiainohexanoateHMDB
L-2,6-Diainohexanoic acidHMDB
L-LysHMDB
Acetate, lysineHMDB
EnisylHMDB
Lysine hydrochlorideHMDB
L LysineHMDB
Lysine acetateHMDB
Molecular FormulaC6H14N2O2
Average Mass146.1876
Monoisotopic Mass146.105527702
IUPAC Name(2S)-2,6-diaminohexanoic acid
Traditional NameL-lysine
CAS Registry Number56-87-1
SMILES
NCCCC[C@H](N)C(O)=O
InChI Identifier
InChI=1S/C6H14N2O2/c7-4-2-1-3-5(8)6(9)10/h5H,1-4,7-8H2,(H,9,10)/t5-/m0/s1
InChI KeyKDXKERNSBIXSRK-YFKPBYRVSA-N