Anti-SEC61 translocon subunit beta antibodies are used for the immunodetection of the protein encoded by the SEC61B gene. In humans, the canonical protein has a reported length of 96 amino acid residues and a mass of 10 kDa. Its subcellular localization is in the ER. A member of the SEC61-beta protein family, it is known to be a component of SEC61 channel-forming translocon complex that mediates transport of signal peptide-containing precursor polypeptides across the endoplasmic reticulum (ER). Other names for this target antigen include SEC61 translocon beta subunit, Sec61 beta subunit, Sec61 complex, beta subunit, protein translocation complex beta, and protein transport protein Sec61 subunit beta. Gene orthologs have been identified in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.