Anti-GK2 antibodies are used in the immunodetection of the protein glycerol kinase 2. In humans, the canonical protein has a reported length of 553 amino acid residues and a mass of 60.6 kDa. Its subcellular localization is in the mitochondria and cytoplasm. It is reported to have testis-specific expression. A member of the FGGY kinase protein family, Gk2 is known to be a key enzyme in the regulation of glycerol uptake and metabolism. Synonyms for this target antigen include GKTA, ATP:glycerol 3-phosphotransferase 2, glycerokinase 2, glycerol kinase pseudogene 2, glycerol kinase testis specific 2, and GKP2. GK2 gene orthologs have been reported in the mouse, rat, bovine and chimpanzee species. Western Blot is the most common application for the Gk2 antibodies listed below. ELISA, Immunocytochemistry, Immunofluorescence, and Immunohistochemistry are also common applications.