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Phenoloxidase System of the Blowfly, Calliphora erythrocephala

C. E. Sekeris and D. Mergenhagen
Science
New Series, Vol. 145, No. 3627 (Jul. 3, 1964), pp. 68-69
Stable URL: http://www.jstor.org/stable/1713304
Page Count: 2
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Abstract

In Calliphora larvae, an inactive precursor of the enzyme phenoloxidase is present in the hemolymph. A special activator enzyme is localized in the cuticle. When phenoloxidase precursor is allowed to react with the activator, it yields a soluble enzyme having the characteristics mainly of a diphenoloxidase. If, however, this conversion takes place in the presence of mitochondria, the phenoloxidase becomes bound to the mitochondria and the resulting preparation shows equally mono- and diphenoloxidase activity.

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