Anti-YJU2B antibodies are used in the immunodetection of the protein YJU2 splicing factor homolog B. In humans, the canonical protein has a reported length of 396 amino acid residues and a mass of 44.8 kDa. Its subcellular localization is in the nucleus. It is notably widely expressed in many tissue types. A member of the CWC16 protein family, YJU2B is suspected to be involved in mRNA splicing. Synonyms for this target antigen include 9 kDa protein, coiled-coil domain containing 130, coiled-coil domain-containing protein 130, and probable splicing factor YJU2B. YJU2B gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.