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  • Title: Differential regulation of protein biosynthesis at translational level in the fat body cells of adult Locusta migratoria.
    Author: Glinka AV, Triseleva TA.
    Journal: Mol Reprod Dev; 1989; 1(4):278-82. PubMed ID: 2629857.
    Abstract:
    Vitellogenin (Vg) and lipophorin (Lp) are synthesized by the fat body of adult locust (Locusta migratoria) females. We have shown by an immunohistochemical technique that both proteins are produced in the same cells of the fat body. The rate of Vg synthesis was measured with the use of double immunoprecipitation of labeled proteins at oviposition and 24 h later. It was found that the rate of Vg synthesis declined significantly by the time of oviposition; however, 24 h later, it was raised to the highest possible level. The rate of Lp synthesis remained constant at both indicated points. The similar postlaying increase in the Vg synthesis rate was observed in the fat bodies of females treated by alpha-amanitin immediately after oviposition. The data provide evidence that Vg biosynthesis in L. migratoria is regulated by selective periodical repression and derepression of Vg mRNAs in the fat body cells but not by total inhibition and stimulation of protein-synthesizing machinery.
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