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Translocation of the Zinc Finger Protein Basonuclin from the Mouse Germ Cell Nucleus to the Midpiece of the Spermatozoon during Spermiogenesis1
Author(s) -
Mỹ G. Mahoney,
Wei Tang,
Ming Ming Xiang,
Stuart B. Moss,
George L. Gerton,
John R. Stanley,
Hung Tseng
Publication year - 1998
Publication title -
biology of reproduction
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.366
H-Index - 180
eISSN - 1529-7268
pISSN - 0006-3363
DOI - 10.1095/biolreprod59.2.388
Subject(s) - biology , spermatozoon , microbiology and biotechnology , spermiogenesis , nucleus , chromosomal translocation , spermatogenesis , germ cell , epidermis (zoology) , ovary , anatomy , ultrastructure , endocrinology , genetics , gene
Basonuclin was first described as a human keratinocyte zinc finger protein present in the nuclei of proliferative basal keratinocytes in the epidermis. It disappears from keratinocytes that have lost their proliferative ability and have entered terminal differentiation. We now report that basonuclin is present also in the germ cells of the mouse testis and ovary. Immunocytochemical staining detected basonuclin in the nuclei of spermatogonia and spermatocytes at various developmental stages. During spermiogenesis, it relocated from the nucleus to the midpiece of the flagellum of the spermatozoa. In the ovary, basonuclin was found mainly in the nuclei of developing oocytes. The dual presence of basonuclin in differentiated spermatozoa and oocytes suggests that it may play a role in their differentiation and the early development of an embryo.

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