Nuclear autoantigenic sperm protein is a protein that in humans is encoded by the NASPgene.[5][6] Multiple isoforms are encoded by transcript variants of this gene.
Function
This gene encodes a histone H1 binding protein that is involved in transporting histones into the nucleus of dividing cells.[7] The somatic form is expressed in all mitotic cells, is localized to the nucleus, and is coupled to the cell cycle. The testicular form is expressed in embryonic tissues, tumor cells, and the testis. In male germ cells, this protein is localized to the cytoplasm of primary spermatocytes, the nucleus of spermatids, and the periacrosomal region of mature spermatozoa.[6]
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^O'Rand MG, Richardson RT, Zimmerman LJ, Widgren EE (Dec 1992). "Sequence and localization of human NASP: conservation of a Xenopus histone-binding protein". Dev Biol. 154 (1): 37–44. doi:10.1016/0012-1606(92)90045-I. PMID1426632.
Maruyama K, Sugano S (1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides". Gene. 138 (1–2): 171–4. doi:10.1016/0378-1119(94)90802-8. PMID8125298.
Lee YH, O'Rand MG (1993). "Ultrastructural localization of a nuclear autoantigenic sperm protein in spermatogenic cells and spermatozoa". Anat. Rec. 236 (3): 442–8. doi:10.1002/ar.1092360304. PMID8363049. S2CID22558475.
Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, et al. (1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library". Gene. 200 (1–2): 149–56. doi:10.1016/S0378-1119(97)00411-3. PMID9373149.
Richardson RT, Bencic DC, O'Rand MG (2001). "Comparison of mouse and human NASP genes and expression in human transformed and tumor cell lines". Gene. 274 (1–2): 67–75. doi:10.1016/S0378-1119(01)00605-9. PMID11674998.