Anti-NOL9 antibodies are used in the immunodetection of the protein nucleolar protein 9. In humans, the canonical protein has a reported length of 702 amino acid residues and a mass of 79.3 kDa. Its subcellular localization is in the nucleus. A member of the Clp1 protein family, NOL9 is known to be a polynucleotide 5'-kinase involved in rRNA processing. Synonyms for this target antigen include polynucleotide 5'-hydroxyl-kinase NOL9 and polynucleotide 5'-kinase. NOL9 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some NOL9 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.