Term Name:	tetrahydrobiopterin metabolic process
Synonyms:	5,6,7,8-tetrahydrobiopterin metabolic process, tetrahydrobiopterin metabolism
Definition:	The chemical reactions and pathways involving tetrahydrobiopterin, the reduced form of biopterin (2-amino-4-hydroxy-6-(1,2-dihydroxypropyl)-pteridine). It functions as a hydroxylation coenzyme, e.g. in the conversion of phenylalanine to tyrosine.
Ontology:	GO: Biological Process [GO:0046146]    QuickGO    AmiGO