COOH
H.N— C — H
z i
H~N— C — H
H,N—C — H
Ł i
CH,
i
ch9
I c
i i
rS
^_c
Cl!u
/CH
NH
V
OH
fenyloalanina (Phe)
tyrozyna (Tyr)
tryptofan (Trp)