Anti-VOPP1 WW domain binding protein antibodies are used for the immunodetection of the protein encoded by the VOPP1 gene. In humans, the canonical protein has a reported length of 172 amino acid residues and a mass of 19.2 kDa. Its subcellular localization is in the cytoplasmic vesicles. Alternative splicing is reported to yield 4 different isoforms for this protein. It is reported to be widely expressed with highest levels in thymus and ovary. It is a member of the VOPP1/ECOP protein family. Other names for this target antigen include EGFR-coamplified and overexpressed protein, Glioblastoma-amplified secreted protein, VOPP1, WBP1/VOPP1 family member, and vesicular, overexpressed in cancer, prosurvival protein 1. Gene orthologs have been identified in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.