Anti-OTUD1 antibodies are used in the immunodetection of the protein OTU deubiquitinase 1. In humans, the canonical protein has a reported length of 481 amino acid residues and a mass of 51.1 kDa. OTUD1 is a type of deubiquitinating enzyme that specifically hydrolyzes 'Lys-63'-linked polyubiquitin to monoubiquitin. Synonyms for this target antigen include DUBA-7, OTU domain containing 1, and OTU domain-containing protein 1.