Here are recombinant proteins for H1FNT, the approved symbol for the human gene, 'H1 histone family member N, testis specific'. With a Uniprot ID of Q75WM6, this protein is listed as having 255 residues in length and a mass of 28.2 kDa. The following protein function has been assigned: 'Essential for normal spermatogenesis and male fertility.' A subcellular localization as 'nuclear' is noted. Orthologs are reported in these species: mouse, rat. H1fnt may also be known by other designations: 'testis-specific H1 histone, HANP1, haploid germ cell-specific nuclear protein 1, histone H1t2, testis secretory sperm-binding protein Li 223n'.