The Pfam:Biopterin_H domain within your query sequence starts at position 105 and ends at position 164, and its E-value is 8.9e-24.

PWFPKKISDLDFCANRVLLYGSELDADHPGFKDNVYRRRRKYFAELAMNYKQTHWVFHPS
Pfam:Biopterin_H

Pfam:Biopterin_H
Pfam domain

Pfam ACC: