Anti-TFB2M antibodies are used in the immunodetection of the protein transcription factor B2, mitochondrial. In humans, the canonical protein has a reported length of 396 amino acid residues and a mass of 45.3 kDa. Its subcellular localization is in the mitochondria. It is ubiquitously expressed across many tissue types. The TFB2M protein is a member of the rRNA adenine N(6)-methyltransferase protein family. Synonyms for this target antigen include HCV NS5A-transactivated protein 5, S-adenosylmethionine-6-N', N'-adenosyl(rRNA) dimethyltransferase 2, hepatitis C virus NS5A-transactivated protein 5, and dimethyladenosine transferase 2, mitochondrial.