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  • Title: Identification and Characterization of Xlr5c as a Novel Nuclear Localization Protein in Mouse Germ Cells.
    Author: Zhuang XJ, Tang WH, Liu CY, Zhu JL, Feng X, Yan J, Lian Y, Liu P, Qiao J.
    Journal: PLoS One; 2015; 10(6):e0130087. PubMed ID: 26075718.
    Abstract:
    BACKGROUND: Spermatogenesis is the complex process by which diploid stem cells generate haploid germ cells in gamete production. Members of the Xlr (X-chromosome linked, lymphocyte regulated) superfamily play essential roles in spermatogenesis. The expression, localization and role in spermatogenesis of one such member, Xlr5c, has not been reported previously. METHODOLOGY/PRINCIPAL FINDINGS: Xlr5c mRNA and protein levels in murine testes and other tissues were investigated using RT-PCR and Western blotting. Xlr5c was abundantly transcribed in mouse testes, particularly during the early stages of spermatogenesis and throughout prophase I in the nuclei of spermatocytes. Xlr5c was specifically localized at synaptonemal complexes(SCs) region in preleptotene and pachytene spermatocytes, as was the homologous Xlr protein Sycp3. CONCLUSIONS/SIGNIFICANCE: These results suggest that Xlr5c was abundantly transcribed in germ cells, localized at SCs region, where it may play a potential role during the early stages of spermatogenesis. Identification and characterization of this novel testis protein may offer a new perspective for understanding of the molecular mechanisms involved in germ cell differentiation.
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