Anti-NWK antibodies enable researchers to detect and measure the NWK antigen in biological samples. This target is a reported synonym of the FCHSD2 gene, which encodes FCH and double SH3 domains 2. This protein is known to function in protein transport, among other biological roles. The human version of NWK has a canonical amino acid length of 740 residues and a protein mass of 84.3 kilodaltons, although 3 isoforms have been identified. It is reported to be localized in the cell membrane and cytoplasm of cells.