Anti-Usher syndrome 2A (autosomal recessive, mild) antibodies enable researchers to detect and measure the Usher syndrome 2A (autosomal recessive, mild) antigen in biological samples. This target is a reported synonym of the USH2A gene, which encodes usherin. This protein is known to function in cellular localization and hair cell differentiation, among other biological roles. The human version of Usher syndrome 2A (autosomal recessive, mild) has a canonical amino acid length of 5202 residues and a protein mass of 575.6 kilodaltons, although 3 isoforms have been identified. It is reported to be localized in the cell projections of cells. Other names for this target antigen include RP39, US2, and USH2.