Biology:NASP (gene)

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Short description: Protein-coding gene in the species Homo sapiens


A representation of the 3D structure of the protein myoglobin showing turquoise α-helices.
Generic protein structure example

Nuclear autoantigenic sperm protein is a protein that in humans is encoded by the NASP gene.[1][2] 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.[3] 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.[2]

References

  1. "Sequence and localization of human NASP: conservation of a Xenopus histone-binding protein". Dev Biol 154 (1): 37–44. Dec 1992. doi:10.1016/0012-1606(92)90045-I. PMID 1426632. 
  2. 2.0 2.1 "Entrez Gene: NASP nuclear autoantigenic sperm protein (histone-binding)". https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=4678. 
  3. "Association of NASP with HSP90 in mouse spermatogenic cells: stimulation of ATPase activity and transport of linker histones into nuclei". J. Biol. Chem. 280 (4): 2904–11. January 2005. doi:10.1074/jbc.M410397200. PMID 15533935. 

Further reading