ላይሲን (Lys ወይም K እንደ አጠር) ኬሚካላዊ ቀመር HO2CCH (NH2) (CH2) 4NH2 ጋር α-አሚኖ አሲድ ነው.
Lysine (gaabiyo Lys ama K) waa acid α-amino la HO2CCH ku formula kiimikada (NH2) (CH2) 4NH2. acid amino acid Tani waa la amino lagama maarmaan ah, taas oo macnaheedu yahay in aadanuhu ma waxaa synthesize karo. codons Its waa AAA iyo AAG.