Proteases of Stored Product Insects and Their Inhibition by Specific Protease Inhibitors from Soybeans and Wheat Grain
Abstract
The ongoing research performed during the period to which this third interim report relates (November 1987 - June 1988) centers on the comparison of the insect digestive enzymes to respective mammalian digestive enzymes, characterizing differences in their kinetic properties and inhibition by naturally occuring and synthetic protease inhibitors. Specifically, these studies deal with a general characterization of Tribolium castaneum proteases, with a detailed characterization of Locusta migratoria caecal trypsins and with initial studies of Locusta migratoria caecal chymotrypsin. At least 8 proteases have been detected in the larval midgut of Tribolium castaneum by electrophoresis on polyacrylamide gels that contain gelatin. Most of the proteolytic activity of Tribolium stems from SH-proteases. The isolation and characterization of locust caecal trypsins and a chymotrypsin are reported. Keywords: Proteases; Protease inhibitors; Stored-product insects tribolium castaneum Midgut proteases; Tenebrio molitor midgut proteases; Locust caecal proteases; Bowman-Birk trypsins-chmotrypsin inhibitor (Soybeans) chickpeas trypsin-chymotrypsin inhibitor; Soybean protease inhibitors; Insect trypsins and chymotrypsins.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 16, 1988
- Accession Number
- ADA201450
Entities
People
- Shalom W. Applebaum
- Yehudith Birk
Organizations
- Hebrew University of Jerusalem