Anti-TENT4B antibodies are used in the immunodetection of the protein terminal nucleotidyltransferase 4B. In humans, the canonical protein has a reported length of 572 amino acid residues and a mass of 63.3 kDa. Its subcellular localization is in the nucleus and cytoplasm. Up to 5 different isoforms have been reported for this protein. A member of the DNA polymerase type-B-like protein family, TENT4B is reported to be a terminal nucleotidyltransferase that catalyzes preferentially the transfert of ATP and GTP on RNA 3' poly(A) tail creating a heterogeneous 3' poly(A) tail leading to mRNAs stabilization by protecting mRNAs from active deadenylation. Synonyms for this target antigen include PAP-associated domain-containing protein 5, TUTase 3, non-canonical poly(A) RNA polymerase PAPD5, poly(A) RNA polymerase D5, non-canonical, and PAP associated domain containing 5. TENT4B gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some TENT4B antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.