Anti-Nav1.3 antibodies enable researchers to detect and measure the Nav1.3 antigen in biological samples. This target is a reported synonym of the SCN3A gene, which encodes sodium voltage-gated channel alpha subunit 3. This protein is known to function in the transport of ions, among other biological roles. The human version of Nav1.3 has a canonical amino acid length of 2000 residues and a protein mass of 226.3 kilodaltons, although 4 isoforms have been identified. It is reported to be localized in the cell membrane of cells. Nav1.3 is a member of the Sodium channel (TC 1.A.1.10) protein family.