Anti-YY1 antibodies are used in the immunodetection of the protein YY1 transcription factor. In humans, the canonical protein has a reported length of 414 amino acid residues and a mass of 44.7 kDa. Its subcellular localization is in the nucleus. It is notably widely expressed in many tissue types. A member of the YY transcription factor protein family, YY1 is known to be involved with B cell differentiation and chromatin remodeling. Post-translational modifications have been described, including ubiquitination, protein cleavage and phosphorylation. Synonyms for this target antigen include GADEVS, INO80S, NF-E1, UCRBP, YIN-YANG-1, transcriptional repressor protein YY1, INO80 complex subunit S, and DELTA. YY1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Over 210 citations in the literature describe the use of YY1 antibodies in research. Western Blot is a widely used application for these antibodies. ELISA and Immunohistochemistry are also common applications.