Anti-RBM23 antibodies are used in the immunodetection of the protein RNA binding motif protein 23. In humans, the canonical protein has a reported length of 439 amino acid residues and a mass of 48.7 kDa. Its subcellular localization is in the nucleus. Up to 5 different isoforms have been reported for this protein. It is reported to be highly expressed in the placenta, liver, skeletal muscle, heart and kidney. A member of the Splicing factor SR protein family, RBM23 is reported to be a RNA-binding protein that acts both as a transcription coactivator and pre-mRNA splicing factor. Post-translational modifications have been described, including ubiquitination. Synonyms for this target antigen include PP239, RNPC4, probable RNA-binding protein 23, CAPER beta, and CAPERbeta. RBM23 gene orthologs have been reported in the mouse, bovine, frog and chimpanzee species. Some RBM23 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.