These TFB3 ELISA kits are immunodetection tools for measuring the levels of TFB3 in biological samples. TFB3 is an alias name of the human MNAT1 gene, which encodes the protein, MNAT1 component of CDK activating kinase. Notably, TFB3 is known to play a role in DNA repair and the regulation of apoptosis, among other functions. The MNAT1 protein is 309 amino acid residues in length and 35.8 kilodaltons in mass. However, as many as 2 protein isoforms have been identified. It is localized to the nucleus of the cell. In terms of tissue specificity, it is reported be highly expressed in colon and testis. Other names for this target antigen include CAP35, MAT1, and RNF66.