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  • Title: [Metabolism of 14C-soluble proteins from silkworm tissues during silk formation].
    Author: Klunova SM, Altsybeeva TI, Filippovich IuB.
    Journal: Biokhimiia; 1980 Nov; 45(11):2044-52. PubMed ID: 7236781.
    Abstract:
    The functional role of individual labelled fractions of haemolymph, fat body, carcass, gut and anterior and posterior divisions of the silk gland of the silkworm Bombyx mori was studied, using polyacrylamide gel electrophoresis. It was found that the protein fractions with Rf = 0.02, 0.05, 0.09 and 0.24 are formed in the gut, carcass and fat body during active feeding and are utilized by the silk gland in the spinning period by means of haemolymph. The contents of amino acids in several electrophoretic protein patterns (Rf = 0.02, 0.05, 0.09 and 0.24) in the haemolymph were determined. These protein fractions are sources of nitrogen-containing material used for increasing the level of free amino acids in the silk gland and for biosynthesis of major silk amino acids.
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