Anti-IWS1 antibodies are used in the immunodetection of the protein interacts with SUPT6H, CTD assembly factor 1. In humans, the canonical protein has a reported length of 819 amino acid residues and a mass of 92 kDa. Its subcellular localization is in the nucleus. Up to 3 different isoforms have been reported for this protein. It is notably widely expressed in many tissue types. A member of the IWS1 protein family, IWS1 is known to be a transcription factor which plays a key role in defining the composition of the RNA polymerase II (RNAPII) elongation complex and in modulating the production of mature mRNA transcripts. Synonyms for this target antigen include IWS1 homolog, IWS1, SUPT6H interacting protein, IWS1-like protein, interacts with Spt6, and protein IWS1 homolog. IWS1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. A number of IWS1 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. Immunofluorescence and Immunohistochemistry are also common applications.