Anti-MFHAS1 antibodies are used in the immunodetection of the protein multifunctional ROCO family signaling regulator 1. In humans, the canonical protein has a reported length of 1052 amino acid residues and a mass of 117 kDa. Its subcellular localization is in the cytoplasm. It is ubiquitously expressed across many tissue types. MFHAS1 is a suspected GTP-binding protein. Post-translational modifications have been described, including ubiquitination. Synonyms for this target antigen include MASL1, ROCO4, malignant fibrous histiocytoma-amplified sequence 1, MFH-amplified sequences with leucine-rich tandem repeats 1, and LRRC65. MFHAS1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some MFHAS1 antibodies may have been used in research and have associated citations. Immunocytochemistry is a widely used application for these antibodies. Western Blot, Immunofluorescence, and Immunohistochemistry are also common applications.