Claim: The protein encoded by this gene stimulates the GTPase activity of normal RAS p21 but not its oncogenic counterpart, and can be found in the cytoplasm.
Evidence: The protein encoded by this gene is located in the cytoplasm and is part of the GAP1 family of GTPase-activating proteins. The gene product stimulates the GTPase activity of normal RAS p21 but not its oncogenic counterpart.