Anti-VNN2 antibodies are used in the immunodetection of the protein vanin 2. In humans, the canonical protein has a reported length of 520 amino acid residues and a mass of 58.5 kDa. Its subcellular localization is in the cell membrane. Up to 6 different isoforms have been reported for this protein. It is reported to be widely expressed with higher expression in spleen and blood. A member of the BTD/VNN protein family, VNN2 is a reported amidohydrolase that hydrolyzes specifically one of the carboamide linkages in D-pantetheine thus recycling pantothenic acid (vitamin B5) and releasing cysteamine. VNN2 is also used as a cellular marker for characterizing hematopoietic stem cells. Synonyms for this target antigen include GPI-80, pantetheine hydrolase VNN2, Vannin 2, glycosylphosphatidyl inositol-anchored protein GPI-80, pantetheinase, and FOAP-4. VNN2 gene orthologs have been reported in the mouse, bovine and chimpanzee species. A number of VNN2 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.