Stizolobate synthase, or 3,4-dihydroxy-L-phenylalanine:oxygen 4,5-oxidoreductase, belongs to the family of oxidoreductases and participates in tyrosine metabolism.
The systematic name of this enzyme class is 3,4-dihydroxy-L-phenylalanine:oxygen 4,5-oxidoreductase (recyclizing). This enzyme belongs to the family of oxidoreductases, specifically those acting on single donors with O2 as oxidant and incorporation of two atoms of oxygen into the substrate (oxygenases). This enzyme participates in tyrosine metabolism. 
