Enzyme produced by some silkworms
Cocoonase is a trypsin-like proteolytic enzyme produced by silkworms (of both "Bombyx", "Heliconius" and "Antheraea" species) as they near the final stages of their metamorphosis. It is produced by cells in the proboscis and exuded onto the galeae. Its function is to weaken the fibers of the cocoon, thereby facilitating the emergence of the adult insect.
It was discovered by Carroll Williams.
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