Anti-MLLT11 transcription factor 7 cofactor antibodies are used for the immunodetection of the protein encoded by the MLLT11 gene. In humans, the canonical protein has a reported length of 90 amino acid residues and a mass of 10.1 kDa. Its subcellular localization is in the nucleus and cytoplasm. It is reported to be expressed in myoepithelial cells of normal breast tissue. A member of the MLLT11 protein family, it is known to be the cofactor for the transcription factor TCF7. Post-translational modifications have been described, including ubiquitination. Other names for this target antigen include protein AF1q, ALL1 fused gene from chromosome 1q, myeloid/lymphoid or mixed-lineage leukemia (trithorax homolog, Drosophila); translocated to, 11, and AF1Q. Gene orthologs have been identified in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.