Term Name:	4-alpha-hydroxytetrahydrobiopterin dehydratase activity
Synonyms:	(6R)-6-(L-erythro-1,2-dihydroxypropyl)-5,6,7,8-tetrahydro-4a-hydroxypterin hydro-lyase [(6R)-6-(L-erythro-1,2-dihydroxypropyl)-7,8-dihydro-6H-pterin-forming], 4-alpha-hydroxy-tetrahydropterin dehydratase activity, 4a-hydroxytetrahydrobiopterin dehydratase activity, 4a-hydroxytetrahydrobiopterin hydro-lyase activity, 4alpha-hydroxy-tetrahydropterin dehydratase activity, pterin-4-alpha-carbinolamine dehydratase activity, pterin-4a-carbinolamine dehydratase activity, pterin-4alpha-carbinolamine dehydratase activity, tetrahydrobiopterin dehydratase activity
Definition:	Catalysis of the reaction: (6R)-6-(L-erythro-1,2-dihydroxypropyl)-5,6,7,8-tetrahydro-4a-hydroxypterin = (6R)-6-(L-erythro-1,2-dihydroxypropyl)-7,8-dihydro-6H-pterin + H2O.
Ontology:	GO: Molecular Function [GO:0008124]    QuickGO    AmiGO