Anti-STE20 related adaptor beta antibodies are used for the immunodetection of the protein encoded by the STRADB gene. In humans, the canonical protein has a reported length of 418 amino acid residues and a mass of 47 kDa. Its subcellular localization is in the nucleus and cytoplasm. Alternative splicing is reported to yield 3 different isoforms for this protein. It is reported to be highly expressed in the heart, skeletal muscle, testis, liver and colon. A member of the STE Ser/Thr protein kinase protein family, it is known to be involved with the cell cycle and the regulation of apoptosis. Other names for this target antigen include ILP-interacting protein ILPIPA, STE20-related kinase adaptor beta, STRAD beta, amyotrophic lateral sclerosis 2 (juvenile) chromosome region, candidate 2, and STE20-related kinase adapter protein beta. Gene orthologs have been identified in the mouse, rat, bovine, frog, chimpanzee and chicken species.