Kaufman, S Novel aspects of metabolism and function of tetrahydrobiopterin. [electronic resource] - Journal of nutritional science and vitaminology 1992 - 492-6 p. digital Publication Type: Journal Article; Review ISSN: 0301-4800 Standard No.: 10.3177/jnsv.38.special_492 doi Subjects--Topical Terms: Biopterins--analogs & derivativesDihydropteridine Reductase--metabolismEnzyme Activation--physiologyHumansPhenylalanine--bloodPhenylalanine Hydroxylase--metabolismPhenylketonurias--enzymology