Anti-Caveolin 2 antibodies are used in the immunodetection of the protein encoded by the CAV2 gene. In humans, the canonical protein has a reported length of 162 amino acid residues and a mass of 18.3 kDa. Its subcellular localization is in the cell membrane, nucleus, golgi, and cytoplasm. It is reported to be expressed in endothelial cells, smooth muscle cells, skeletal myoblasts and fibroblasts. A member of the Caveolin protein family, it is believed to act as a scaffolding protein within caveolar membranes. Post-translational modifications have been described, including phosphorylation. Other names for this target antigen include CAV and caveolae protein, 20-kD.