The NAR ELISA kits listed below are analytical tools for measuring concentrations of NAR in various samples. NAR is an alternative name for the human CPSF4 gene, which encodes the protein, cleavage and polyadenylation specific factor 4. The target protein is a known component of the cleavage and polyadenylation specificity factor (CPSF) complex that play a key role in pre-mRNA 3'-end formation, recognizing the AAUAAA signal sequence and interacting with poly(A) polymerase and other factors to bring about cleavage and poly(A) addition. Structurally, the CPSF4 protein is 269 amino acid residues in length and 30.3 kilodaltons in mass. However, as many as 3 protein isoforms have been identified. It is localized to the nucleus of the cell. Other names for this target antigen include CPSF30 and CPSF30. Click on the following ELISA kits for more detailed information, including target reactivity and assay sensitivity.