Anti-CRY2 antibodies are used in the immunodetection of the protein cryptochrome circadian regulator 2. In humans, the canonical protein has a reported length of 593 amino acid residues and a mass of 66.9 kDa. Its subcellular localization is in the nucleus and cytoplasm. Up to 2 different isoforms have been reported for this protein. It is notably widely expressed in many tissue types. A member of the DNA photolyase class-1 protein family, CRY2 is known to be a transcriptional repressor which forms a core component of the circadian clock. Synonyms for this target antigen include PHLL2, cryptochrome-2, cryptochrome 2 (photolyase-like), cryptochrome circadian clock 2, growth-inhibiting protein 37, and HCRY2. CRY2 gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. A number of CRY2 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. Immunofluorescence and Immunohistochemistry are also common applications.