Anti-WDR91 antibodies are used in the immunodetection of the protein WD repeat domain 91. In humans, the canonical protein has a reported length of 747 amino acid residues and a mass of 83.3 kDa. Its subcellular localization is in the membrane. Up to 3 different isoforms have been reported for this protein. A member of the WD repeat WDR91 protein family, WDR91 is known to function as a negative regulator of the PI3 kinase/PI3K activity associated with endosomal membranes via BECN1, a core subunit of the PI3K complex. Synonyms for this target antigen include SORF-1, SORF1, WD repeat-containing protein 91, and HSPC049. WDR91 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some WDR91 antibodies may have been used in research and have associated citations. Immunohistochemistry is a widely used application for these antibodies. ELISA and Immunofluorescence are also common applications.