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  • POSVP(21), a major secretory androgen-dependent protein from sand rat seminal vesicles, identified as a transgelin.

POSVP(21), a major secretory androgen-dependent protein from sand rat seminal vesicles, identified as a transgelin.

Asian journal of andrology (2010-04-20)
Naïma Kaci-Ouchfoun, Anne Incamps, Fatima Hadj-Bekkouche, Mohamed Cherif Abbadi, Laurent Bellanger, Thérèse Gernigon-Spychalowicz
PMID20400972
ABSTRACT

The seminal vesicles of adult sand rat contain a major secretory protein band (MW 21 kDa) designated as Psammomys obesus seminal vesicles protein of 21 kDa (POSVP(21)). This protein is abundant in secretions, regulated by androgens and also present in the vaginal plug. POSVP(21) accounts for over 22.3% of soluble proteins from homogenate during the breeding season, 13.3% during the middle season and 5.3% during the hormonal regression season. It is absent during the non-breeding season. POSVP(21) is localized in the cytoplasm of epithelial cells and in secretory products in the lumen. It presents an immunological homology with two epididymal proteins with the same molecular weight and a high degree of homology with transgelin from rat (Rattus norvegicus).