Anti-ETF1 antibodies are used in the immunodetection of the protein eukaryotic translation termination factor 1. In humans, the canonical protein has a reported length of 437 amino acid residues and a mass of 49 kDa. Its subcellular localization is in the cytoplasm. Up to 2 different isoforms have been reported for this protein. It is notably widely expressed in many tissue types. It is a member of the Eukaryotic release factor 1 protein family. Post-translational modifications have been described, including methylation. Synonyms for this target antigen include ERF, ERF1, RF1, SUP45L1, TB3-1, and D5S1995. ETF1 gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. A number of ETF1 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. Flow Cytometry, Immunofluorescence, and Immunohistochemistry are also common applications.