ARAP2 (ArfGAP With RhoGAP Domain, Ankyrin Repeat, and PH Domain 2): ARAP2 is a protein that plays a crucial role in cell signalling by functioning as a GTPase-activating protein for members of the Arf and Rho families. It is significant for regulating cell migration and the organisation of the cytoskeleton, with potential implications in cancer metastasis and cellular morphology.