The HBI ELISA kits listed below utilize specific antibodies for the plate-based assay of HBI in various samples. HBI is another term for the FKBP4 gene, which encodes the protein, FKBP prolyl isomerase 4 in humans. It has been reported that HBI plays a role in the transport of ions and protein folding, among other functions. Structurally, the FKBP4 protein is described to be 459 amino acid residues in length and 51.8 kilodaltons in mass. It is localized to the nucleus, mitochondria, and cytoplasm of the cell. In terms of tissue specificity, it is widely expressed across many tissue types. This protein is known to be phosphorylated. Other names for this target antigen include FKBP51, FKBP52, and FKBP59. Click on the following ELISA kits for more detailed information, including target reactivity and assay sensitivity.