Anti-DKKL1 antibodies are used in the immunodetection of the protein dickkopf like acrosomal protein 1. In humans, the canonical protein has a reported length of 242 amino acid residues and a mass of 27 kDa. Its subcellular localization is in the cytoplasmic vesicles and is secreted. It is notably expressed in the testis. DKKL1 is known to be involved in fertilization by facilitating sperm penetration of the zona pellucida. Post-translational modifications have been described, including N-glycosylation. Synonyms for this target antigen include SGY, SGY-1, SGY1, dickkopf-like protein 1, cancer/testis antigen 34, dickkopf-like 1, protein soggy-1, and CT34. DKKL1 gene orthologs have been reported in the mouse, rat, bovine and chimpanzee species. A number of DKKL1 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.