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    Occurrence of insect kinins in the flesh fly, stable fly and horn fly—mass spectrometric identification from single nerves and diuretic activity

    Nachman, R.J. and Coast, Geoffrey and Tichy, S.E. and Russell, D.H. and Miller, J.A. and Predel, R. (2002) Occurrence of insect kinins in the flesh fly, stable fly and horn fly—mass spectrometric identification from single nerves and diuretic activity. Peptides 23 (11), pp. 1885-1894. ISSN 0196-9781.

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    Abstract

    MALDI-TOF mass spectrometric analysis of single lateral abdominal nerves (LANs) demonstrate the presence of the insect kinin Musdo-K in the housefly Musca domestica, and identify heretofore unknown insect kinins in two other Dipteran species as Musdo-K in the stable fly Stomoxys calcitrans and horn fly Haematobia irritans. The insect kinin native to the flesh fly Neobellieria bullata is identified as Drome-K. Musdo-K and Drome-K are identical save for the conservative substitution of Ser for Thr in position 2. The sequences of the insect kinins are, therefore, remarkably conserved throughout Dipterans. The in vitro Malpighian tubule fluid secretion activity of Musdo-K in the stable fly is similar to that in the housefly, whereas that of Drome-K is 30-fold more potent in the flesh fly than in the fruit fly. Given the structural identities of the kinins and CRF-like diuretic hormones of these Dipteran species, the housefly can serve as a model insect for the study of diuretic peptides and their functions in the stable fly and horn fly, both livestock pests.

    Metadata

    Item Type: Article
    School: Birkbeck Schools and Departments > School of Science > Biological Sciences
    Depositing User: Sarah Hall
    Date Deposited: 20 May 2019 15:36
    Last Modified: 20 May 2019 15:36
    URI: http://eprints.bbk.ac.uk/id/eprint/27578

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