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  • Title: Interaction of proteins RSV IV and RSV V in rat seminal vesicle secretion.
    Author: Manco G, Sansone G, Abrescia P.
    Journal: J Exp Zool; 1989 Feb; 249(2):193-202. PubMed ID: 2723606.
    Abstract:
    The RSV IV polypeptide, molecular weight ratio (Mr = 10,000), which is produced by the rat seminal vesicle, has previously been suggested to be associated with another polypeptide in the gland secretion (Higgins et al., '76). This study provides that RSV IV is a component of a protein shown by immunoassays, electrophoresis, and amino acid composition analysis to contain, together with RSV IV, the seminal vesicle secretory RSV V polypeptide (Mr = 13,000). This RSV IV-RSV V complex (namely CFS protein) had an isoelectric point at pH 7.2 and an approximate molecular weight of 22,000 daltons. This complex inhibits the previously reported in vitro binding of the isolated RSV IV to epididymal sperm cells, thus suggesting a functional role for the RSV IV-RSV V interaction.
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