Predicted to enable 6,7-dihydropteridine reductase activity; identical protein binding activity; and nucleotide binding activity. Predicted to be involved in L-phenylalanine catabolic process and tetrahydrobiopterin biosynthetic process. Located in mitochondrion. Is expressed in several structures, including alimentary system; genitourinary system; nervous system; nose; and respiratory system. Human ortholog(s) of this gene implicated in phenylketonuria. Orthologous to human QDPR (quinoid dihydropteridine reductase). [provided by Alliance of Genome Resources, Apr 2022]