Anti-DAC antibodies enable researchers to detect and measure the DAC antigen in biological samples. This target is a reported synonym of the FBXW4 gene, which encodes F-box and WD repeat domain containing 4. This protein is known to function in the Wnt signaling pathway, among other biological roles. The human version of DAC has a canonical amino acid length of 412 residues and a protein mass of 46.3 kilodaltons. It is reported to be notably expressed in the pancreas, lung, duodenum, breast, and bone marrow.