RASA4 ELISA kits are immunoassay tools for the measurement of the protein, RAS p21 protein activator 4, which is encoded by the RASA4 gene in humans. Functionally, this protein is known to be involved in intracellular signal transduction. The canonical protein structure is reported to have an amino acid sequence of 803 residues and a mass of 90.5 kDa. It is known to be localized in the cell membrane and cytoplasm and is widely expressed across many tissue types. As many as 2 protein isoforms have been reported. Other alias names for this target include GAPL, ras GTPase-activating protein 4, Ca2+-promoted Ras inactivator, calcium-promoted Ras inactivator, rasGAP-activating-like protein 2, and CAPRI.