Anti-Spnb4 antibodies enable researchers to detect and measure the Spnb4 antigen in biological samples. This target is a reported synonym of the SPTBN4 gene, which encodes spectrin beta, non-erythrocytic 4. This protein is known to function in cytoskeleton organization and neuronal development, among other biological roles. The human version of Spnb4 has a canonical amino acid length of 2564 residues and a protein mass of 289 kilodaltons, although 5 isoforms have been identified. It is reported to be localized in the cytoplasm of cells and notably expressed in the ovary, cerebral cortex, cerebellum, and adrenal gland. Spnb4 is a member of the Spectrin protein family.