Anti-cyclophilin-33 antibodies enable researchers to detect and measure the cyclophilin-33 antigen in biological samples. This target is a reported synonym of the PPIE gene, which encodes peptidylprolyl isomerase E. This protein is known to function in RNA splicing and protein folding, among other biological roles. The human version of cyclophilin-33 has a canonical amino acid length of 301 residues and a protein mass of 33.4 kilodaltons, although 3 isoforms have been identified. It is reported to be localized in the nucleus of cells and widely expressed in many tissue types. Other names for this target antigen include CYP-33, CYP33, and peptidyl-prolyl cis-trans isomerase E. Western Blot is a widely used application for the cyclophilin-33 antibodies listed below. In addition, ELISA is also a common application.