Anti-Kv11.3 antibodies enable researchers to detect and measure the Kv11.3 antigen in biological samples. This target is a reported synonym of the KCNH7 gene, which encodes potassium voltage-gated channel subfamily H member 7. This protein is known to function in potassium ion transport and the transport of ions, among other biological roles. The human version of Kv11.3 has a canonical amino acid length of 1196 residues and a protein mass of 135 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the membrane of cells. Kv11.3 is a member of the Potassium channel protein family.