Anti-RAB40B antibodies are used in the immunodetection of the protein RAB40B, member RAS oncogene family. In humans, the canonical protein has a reported length of 278 amino acid residues and a mass of 31 kDa. Its subcellular localization is in the cell membrane. A member of the Rab protein family, RAB40B is believed to be a substrate-recognition component of a SCF-like ECS (Elongin-Cullin-SOCS-box protein) E3 ubiquitin ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins. Synonyms for this target antigen include SEC4L, ras-related protein Rab-40B, GTP-binding protein homologous to Saccharomyces cerevisiae SEC4, SOCS box-containing protein RAR, protein Rar, and RAR. RAB40B gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. Some RAB40B antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.