Anti-Profilin 4 antibodies enable researchers to detect and measure the Profilin 4 antigen in biological samples. This target is a reported synonym of the PFN4 gene, which encodes profilin family member 4. This protein is known to function in spermatogenesis, among other biological roles. The human version of Profilin 4 has a canonical amino acid length of 129 residues and a protein mass of 14.3 kilodaltons. It is reported to be localized in the cytoplasm of cells. This target antigen may also be known as profilin-4.