Anti-ERI1 antibodies are used in the immunodetection of the protein exoribonuclease 1. In humans, the canonical protein has a reported length of 349 amino acid residues and a mass of 40.1 kDa. Its subcellular localization is in the nucleus and cytoplasm. ERI1 is reported to be a RNA exonuclease that binds to the 3'-end of histone mRNAs and degrades them, suggesting that it plays an essential role in histone mRNA decay after replication. Synonyms for this target antigen include 3' exoribonuclease, 3'-5' exonuclease ERI1, enhanced RNAi three prime mRNA exonuclease homolog 1, histone mRNA 3' end-specific exonuclease, and 3'-5' exoribonuclease 1. ERI1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. A number of ERI1 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunohistochemistry are also common applications.