Predicted to enable 4-alpha-hydroxytetrahydrobiopterin dehydratase activity; identical protein binding activity; and phenylalanine 4-monooxygenase activity. Predicted to be involved in positive regulation of transcription, DNA-templated. Predicted to be located in nucleus. Orthologous to human PCBD2 (pterin-4 alpha-carbinolamine dehydratase 2). [provided by Alliance of Genome Resources, Apr 2022]