1) Amino acid 2) Amino acid known as K 3) An amino acid 4) Basic amino acid 5) Basic amino acid 6) Essential amino acid 7) Important amino acid 8) Important basic amino acid 1) Hexone 
Lys. A naturally occurring amino acid with an amine group on its side chain.
Lysine (abbreviated as Lys or K) is an α-amino acid with the chemical formula HO2CCH(NH2)(CH2)4NH2. It is an essential amino acid for humans. Lysine`s codons are AAA and AAG. Lysine is a base, as are arginine and histidine. The ε-amino group often participates in hydrogen bonding and as a general base in catalysis. (The ε-amino group (NH3+) is....
C6H14N2O2 Molar mass: 146.18756
<amino acid> The only carrier of a side chain primary amino group in proteins. Has important structural and chemical roles in proteins. ... (18 Nov 1997) ... 
(li´sēn) a naturally occurring essential amino acid that is necessary for optimal growth in infants and for maintenance of nitrogen equilibrium in adults. The acetate and hydrochloride salts are used for dietary supplements and the hydrochloride salt is used for the treatment of severe metabolic acidosis that is re...
(= Lys; K; 146D) Amino acid; the only carrier of a side-chain primary amino group in proteins. Has important structural and chemical roles in proteins. See Table A2
(K, Lys) Type: Term Pronunciation: lī′sēn Definitions: 1. the l-isomer is a nutritionally essential α-amino acid of mammals found in many proteins; distinguished by an ε-amino group.
Lysine: An amino acid, one of the 20 building blocks of protein. A dietary essential amino acid, lysine is present in many proteins and is necessary for optimal growth in childhood. Symbol: Lys.
[n] - an essential amino acid found in proteins
noun an essential amino acid found in proteins; occurs especially in gelatin and casein
a crystalline, basic, amino acid, HN(CH)CH(NH)COOH, produced chiefly from many proteins by hydrolysis, essential in the nutrition of humans and animals. Abbr.: Lys; Symbol: K