The B23 ELISA kits listed below utilize specific antibodies for the plate-based assay of B23 in various samples. B23 is another term for the NPM1 gene, which encodes the protein, nucleophosmin 1 in humans. It has been reported that B23 plays a role in chromatin remodeling and DNA repair, among other functions. Structurally, the NPM1 protein is 294 amino acid residues in length and 32.6 kilodaltons in mass. However, as many as 3 protein isoforms have been identified. It is localized to the nucleus and cytoplasm of the cell. This protein is known to be ubiquitinated, sumoylated, acetylated and phosphorylated. Other names for this target antigen include NPM and nucleophosmin. Click on the following ELISA kits for more detailed information, including target reactivity and assay sensitivity.