Anti-MBT1 antibodies enable researchers to detect and measure the MBT1 antigen in biological samples. This target is a reported synonym of the L3MBTL3 gene, which encodes L3MBTL histone methyl-lysine binding protein 3. This protein is known to function in chromatin organization and granulocyte differentiation, among other biological roles. The human version of MBT1 has a canonical amino acid length of 780 residues and a protein mass of 88.3 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the nucleus of cells and notably expressed in many tissues, such as the bronchus, vagina, and adrenal gland.