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  • Vitellogenin isolation, purification and antigenic cross-reactivity in three teleost species.

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    Vitellogenin_paper_3.pdf (154.9Kb)
    Author(s)
    Watts, M
    Pankhurst, NW
    Pryce, A
    Sun, B
    Griffith University Author(s)
    Pankhurst, Ned W.
    Year published
    2003
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    Abstract
    Vitellogenin (Vtg) was isolated from male greenback flounder (Rhombosolea tapirina), rainbow trout (Oncorhynchus mykiss) and Atlantic salmon (Salmo salar) plasma, following induction by estradiol (E2) inoculation. The molecular weight of each native molecule, as determined by gel filtration, was 540, 383 and 557 kDa, respectively. With sodium dodecyl sulphate polyacrylamide gel electrophoresis under reducing conditions, Atlantic salmon and greenback flounder Vtg appeared as three major bands (;159, 117, 86 kDa and 155, 104, 79 kDa, respectively), whereas rainbow trout Vtg appeared as one major band (;154 kDa). Several ...
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    Vitellogenin (Vtg) was isolated from male greenback flounder (Rhombosolea tapirina), rainbow trout (Oncorhynchus mykiss) and Atlantic salmon (Salmo salar) plasma, following induction by estradiol (E2) inoculation. The molecular weight of each native molecule, as determined by gel filtration, was 540, 383 and 557 kDa, respectively. With sodium dodecyl sulphate polyacrylamide gel electrophoresis under reducing conditions, Atlantic salmon and greenback flounder Vtg appeared as three major bands (;159, 117, 86 kDa and 155, 104, 79 kDa, respectively), whereas rainbow trout Vtg appeared as one major band (;154 kDa). Several minor bands were also present in each Vtg isolate. Polyclonal antisera, produced against only the highest molecular weight band from each species following excision from reducing gels, were reactive with all major bands in Western blots. In competition ELISA, parallel binding slopes were demonstrated between purified Vtg and plasma from vitellogenic females of the same species, but there was no reaction with plasma from untreated males. These antisera were highly species-specific and little cross-reactivity was noted, even between the two salmonid species. These data suggest that excision of bands from gels is a simple procedure for the preparation of species-specific antisera, and confirm that cross-species assays give highly variable results. 2002 Elsevier Science Inc. All rights reserved.
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    Journal Title
    Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology
    Volume
    134
    Issue
    3
    Publisher URI
    http://www.elsevier.com/locate/cbpb
    DOI
    https://doi.org/10.1016/S1096-4959(02)00288-9
    Copyright Statement
    © 2003 Elsevier. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.
    Subject
    Biochemistry and cell biology
    Zoology
    Publication URI
    http://hdl.handle.net/10072/14626
    Collection
    • Journal articles

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