Anti-GT antibodies are protein reagents that detect specific antigens. The GT antigen is another term for the human protein integrin subunit alpha 2b, encoded by the ITGA2B gene. The protein is known to function in angiogenesis and cell adhesion, among other biological roles. Canonically, it has an amino acid length of 1039 residues and a mass of 113.4 kilodaltons. Its subcellular localization is in the membrane and it is expressed in the bone marrow and placenta. The GT protein is a member of the Integrin alpha chain protein family.