Intestinal Proteinases in an Insect, Calliphora vomitoria L.

descriptionPublicationkeyboard_double_arrow_right Article 01 Dec 1961 English Publisher:Springer Science and Business Media LLCJournal:Nature, volume 192, pages 999-1,000 (issn: 0028-0836, eissn: 1476-4687,

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Authors: A, FRASER; R A, RING; R K, STEWART;

doi: 10.1038/192999a0

pmid: 13894742

Intestinal Proteinases in an Insect, Calliphora vomitoria L.

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Abstract

THE properties of the proteolytic enzymes occurring in extracts of insect guts are generally thought to resemble those of vertebrate trypsin1,2. Only proteinases of alkaline type, with maximum activity about pH 8, have been recorded in Calliphora adults3, Lucilia larvae4, Musca larvae5, Stomoxys adults6, and Calliphora larvae7. The only workers td suggest that proteinases in Diptera–Cyclorrhapha do not conform to the general theory, Greenberg and Paretsky8, reported two distinct proteinases functioning in every stage of the life-cycle of Musca with pH optima at pH 3 and pH 8–9.

Related Organizations

University of Glasgow
United Kingdom

Keywords

Insecta, Diptera, Endopeptidases, Animals, Intestinal Mucosa, Peptide Hydrolases

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