Figure 1

Melatonin synthesis. Abbreviations are: TPH-2, Tryptophan hydroxylase-2; AA – DC, aromatic aminoacid decarboxylase; AA-NAT, arylalkylamine N-acetyltransferase; HIOMT, hydroxyindole O-methyltransferase.
Melatonin synthesis. Abbreviations are: TPH-2, Tryptophan hydroxylase-2; AA – DC, aromatic aminoacid decarboxylase; AA-NAT, arylalkylamine N-acetyltransferase; HIOMT, hydroxyindole O-methyltransferase.