Anti-U2af26 antibodies enable researchers to detect and measure the U2af26 antigen in biological samples. This target is a reported synonym of the U2AF1L4 gene, which encodes U2 small nuclear RNA auxiliary factor 1 like 4. This protein is known to function in RNA splicing, among other biological roles. The human version of U2af26 has a canonical amino acid length of 220 residues and a protein mass of 25.7 kilodaltons, although 3 isoforms have been identified. It is reported to be localized in the nucleus and cytoplasm of cells and widely expressed in many tissue types. U2af26 is a member of the Splicing factor SR protein family.