Tyrosine...
tryptophan
arginine
glutamate
histidine
sorry for my abbreviation .. fflg is following amino acids
melanin, catacholamine
niacin, 5ht,
NO2
urea
?
tyrosine can also be used for thryoxine
additional...
tyrosine ( from phenylalanine) - pinkypoosible and phyiso cardio is correct... T3 and T4, melanin and catecholamine
tryptophan- additonal... serotinin and melatonin
arginine-- creatinine and urea as well as NO
glutamate is GABA
HISTIDINE -histamine(fhelou is correct)