Anti-IER2 antibodies are used in the immunodetection of the protein immediate early response 2. In humans, the canonical protein has a reported length of 223 amino acid residues and a mass of 24.2 kDa. Its subcellular localization is in the nucleus and cytoplasm. It is reported to be expressed in activated T-cells. A member of the IER protein family, IER2 is reported to be a dna-binding protein that seems to act as a transcription factor. Synonyms for this target antigen include ETR101, immediate early response gene 2 protein, chxI protein homolog, and CHX1. IER2 gene orthologs have been reported in the mouse, rat, bovine, frog and chimpanzee species. Some IER2 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunofluorescence are also common applications.