These JNK-55 ELISA kits are immunodetection tools for measuring the levels of JNK-55 in biological samples. JNK-55 is an alias of the human MAPK9 gene, which encodes the protein, mitogen-activated protein kinase 9. Notably, JNK-55 is known to play a role in the apoptotic pathway and peptidyl-serine phosphorylation, among other functions. The MAPK9 protein is 424 amino acid residues in length and 48.1 kilodaltons in mass. However, as many as 5 protein isoforms have been identified. It is localized to the nucleus and cytoplasm of the cell. This protein is known to be phosphorylated. Other names for this target antigen include JNK2. Click on the following ELISA kits for more detailed information, including target reactivity and assay sensitivity.