Listed are ELISA Kits for the detection of LRG-21, an alias name of activating transcription factor 3. The human protein, encoded by the gene ATF3, is 181 amino acid residues long and has a mass of 20,576 daltons. However, there are up to 5 reported isoforms. It is a member of the BZIP family, ATF subfamily. This protein is reported to have a nuclear cellular localization. For this target protein, ELISA kits with the following species reactivities are available: human, mouse, rat, and other mammalian. This target may also be known as: cyclic AMP-dependent transcription factor ATF-3, and cAMP-dependent transcription factor ATF-3.