Proline-serine-threonine phosphatase-interacting protein 2 is an enzyme that in humans is encoded by the PSTPIP2 gene. This protein, also known as macrophage F-actin-associated and tyrosine phosphorylated protein (MAYP) is a member of the Pombe Cdc15 homology (PCH) family of proteins has been shown to coordinate membrane and cytoskeletal dynamics