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Digestive proteases in 4 species of polistes wasps



Digestive proteases in 4 species of polistes wasps



Canadian Journal of Zoology 56(6): 1454-1459



Adults of Polistes exclamans, P. metricus, P. fuscatus and P. annularis (Hymenoptera: Vespidae) were examined for digestive protease activity. All samples analyzed cotained chymotrypsin-like, trypsin-like, carboxypeptidase-A-like, and carboxypeptidase-B-like activities. The wasp chymotryptic enzyme had a serine and histidine in its active center and a specificity for aromatic amino acids and in these respects was similar to bovine chymotrypsin. The tryptic enzyme did not react like its bovine homolog, through low concentrations of this enzyme and the limit of sensitivity of the spectrophotometer may account for the differences. Enzyme comparison are made between these Polistes sp. and 3 vespid spp. [Vespula germanica, V. maculifrons and Vespa orientalis].

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Accession: 005161751

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