Kapatos G. et al "Biosynthesis of biopterin: adrenergic cyclic adenosine monophosphate-dependent inhibition in the pineal gland"   Science. 1981 Sep 4;213(4512):1129-31
Williams RA. et al "Phenylketonuria: an inborn error of phenylalanine metabolism"   Clin Biochem Rev. 2008 Feb;29(1):31-41
Thony B. et al "Tetrahydrobiopterin biosynthesis, regeneration and functions"   Biochem J. 2000 Apr 1;347 Pt 1:1-16
Thöny B. et al "Chromosomal location of two human genes encoding tetrahydrobiopterin-metabolizing enzymes: 6-pyruvoyl-tetrahydropterin synthase maps to 11q22.3-q23.3, and pterin-4 alpha-carbinolamine dehydratase maps to 10q22"   Genomics. 1994 Jan 15;19(2):365-8
Miller AL. "The Methylation, Neurotransmitter, and Antioxidant Connections Between Folate and Depression"   Altern Med Rev 2008 Sep;13(3):216-26
†The statements on this Web site have not been evaluated by the Food and Drug Administration (FDA). And are not intended to diagnose, treat, cure or prevent disease. The information presented is not intended to replace medical advice or treatment from your own doctor or healthcare provider. Nothing presented here is intended as a substitute for prescription medication or any other medical treatment prescribed by your doctor.