Anti-K2P4.1 antibodies enable researchers to detect and measure the K2P4.1 antigen in biological samples. This target is a reported synonym of the KCNK4 gene, which encodes potassium two pore domain channel subfamily K member 4. This protein is known to function in potassium ion transport and the transport of ions, among other biological roles. The human version of K2P4.1 has a canonical amino acid length of 393 residues and a protein mass of 42.7 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the cell membrane of cells. Other names for this target antigen include FHEIG and TRAAK.