Predicted to enable GTPase activity; guanyl ribonucleotide binding activity; and magnesium ion binding activity. Involved in Rap protein signal transduction. Acts upstream of or within negative regulation of cell migration and positive regulation of protein autophosphorylation. Located in cytosol and recycling endosome membrane. Orthologous to human RAP2A (RAP2A, member of RAS oncogene family). [provided by Alliance of Genome Resources, Apr 2022]