Anti-USP42 antibodies are used in the immunodetection of the protein ubiquitin specific peptidase 42. In humans, the canonical protein has a reported length of 1324 amino acid residues and a mass of 145.4 kDa. Up to 2 different isoforms have been reported for this protein. It is widely expressed across many tissue types. A member of the Peptidase C19 protein family, USP42 is reported to be a deubiquitinating enzyme, which may play an important role during spermatogenesis. Synonyms for this target antigen include deubiquitinating enzyme 42, ubiquitin specific protease 42, ubiquitin thioesterase 42, ubiquitin thiolesterase 42, ubiquitin-specific-processing protease 42, and ubiquitin carboxyl-terminal hydrolase 42. USP42 gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. Some USP42 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.