Anti-TIF1D antibodies enable researchers to detect and measure the TIF1D antigen in biological samples. This target is a reported synonym of the TRIM66 gene, which encodes tripartite motif containing 66. This protein is believed to function as a transcription repressor; The repressive effects are mediated, at least in part, by recruitment of deacetylase activity. The human version of TIF1D has a canonical amino acid length of 1351 residues and a protein mass of 149.5 kilodaltons, although 3 isoforms have been identified. It is reported to be localized in the nucleus of cells and widely expressed in many tissue types.