Anti-Hash antibodies enable researchers to detect and measure the Hash antigen in biological samples. This target is a reported synonym of the SPATA6 gene, which encodes spermatogenesis associated 6. This protein is known to function in cell differentiation and spermatogenesis, among other biological roles. The human version of Hash has a canonical amino acid length of 488 residues and a protein mass of 56 kilodaltons, although 2 isoforms have been identified. It is reported to be a secreted protein. Other names for this target antigen include SRF-1 and SRF1.