Anti-EFA6B antibodies enable researchers to detect and measure the EFA6B antigen in biological samples. This target is a reported synonym of the PSD4 gene, which encodes pleckstrin and Sec7 domain containing 4. The human version of EFA6B has a canonical amino acid length of 1056 residues and a protein mass of 116.2 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the cell membrane of cells and notably expressed in many tissues, such as the kidney and lung.