Anti-ITGB3BP antibodies are used in the immunodetection of the protein integrin subunit beta 3 binding protein. In humans, the canonical protein has a reported length of 177 amino acid residues and a mass of 20.2 kDa. Its subcellular localization is in the nucleus and cytoplasm. Alternative splicing is reported to yield 5 different isoforms for this protein. It is widely expressed across many tissue types. ITGB3BP is reported to be a transcription coregulator that can have both coactivator and corepressor functions. Synonyms for this target antigen include CENPR, HSU37139, NRIF3, TAP20, centromere protein R, beta 3 endonexin, beta3-endonexin, and CENP-R.