Tyrosinase and the Respiration of Pupae of Platysamia Cecropia L.

The Qo2 of diapausing pupae of Platysamia cecropia is not affected by injection of substrates or inhibitors of the enzyme tyrosinase. 2. The Qo2 of homogenates prepared from such animals is markedly influenced by the above reagents. 3. On the basis of this and other data, it is concluded that tyrosinase does not function as a terminal oxidase in the respiration of the diapausing pupa.