Anti-MMS19 antibodies are used in the immunodetection of the protein MMS19 homolog, cytosolic iron-sulfur assembly component. In humans, the canonical protein has a reported length of 1030 amino acid residues and a mass of 113.3 kDa. Its subcellular localization is in the nucleus and cytoplasm. Up to 6 different isoforms have been reported for this protein. It is widely expressed across many tissue types. A member of the MET18/MMS19 protein family, MMS19 is reported to be a key component of the cytosolic iron-sulfur protein assembly (CIA) complex, a multiprotein complex that mediates the incorporation of iron-sulfur cluster into apoproteins specifically involved in DNA metabolism and genomic integrity. Synonyms for this target antigen include MET18 homolog, MMS19 cytosolic iron-sulfur assembly component, MMS19 nucleotide excision repair homolog, MMS19-like (MET18 homolog, S. cerevisiae), and MMS19 nucleotide excision repair protein homolog. A number of MMS19 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA, Immunofluorescence, and Immunohistochemistry are also common applications.