Anti-SPDYE2B antibodies are used in the immunodetection of the protein speedy/RINGO cell cycle regulator family member E2B. In humans, the canonical protein has a reported length of 402 amino acid residues and a mass of 48.3 kDa. Up to 2 different isoforms have been reported for this protein. It is notably expressed in the testis. It is a member of the Speedy/Ringo protein family. Synonyms for this target antigen include WBSCR19-like protein 3, putative WBSCR19-like protein 3, putative speedy protein E2-like protein, and speedy protein E2B. These SPDYE2B antibodies are widely used in Western Blot experiments, among other applications.