Anti-FKBP12.6 antibodies enable researchers to detect and measure the FKBP12.6 antigen in biological samples. This target is a reported synonym of the FKBP1B gene, which encodes FKBP prolyl isomerase 1B. This protein is known to function in carbohydrate metabolism and homeostasis, among other biological roles. The human version of FKBP12.6 has a canonical amino acid length of 108 residues and a protein mass of 11.8 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the cytoplasm of cells. Other names for this target antigen include FKBP1L and OTK4.