Anti-HNRPA3 antibodies are used in antigen-specific immunodetection in biological samples. The target HNRPA3 is a known alias name of the protein heterogeneous nuclear ribonucleoprotein A3, encoded by the HNRNPA3 gene in humans. This 378-amino acid residue protein is reported to play a role in cytoplasmic trafficking of RNA. It is localized to the nucleus of the cell. It is reported to be widely expressed in many tissue types.