[Encoded by human PTP4A1 Gene (PTP Family), Protein Tyrosine Phosphatase IVA1 is a regulatory cell signaling nuclear tyrosine phosphatase primarily associated with the plasma membrane that belongs to a small class of prenylated PTPs, contains a PTP domain and a characteristic C-terminal prenylation motif, and may be an immediate-early gene product in mitogen-stimulated cells. The surface membrane association of PTP4A1 depends on C-terminal prenylation. (NCI) ( NCI )] (UMLS (NCI) C1335552) PRL1; Protein Tyrosine Phosphatase PTPCAAX1; Protein Tyrosine Phosphatase Type IVA Member 1; Protein Tyrosine Phosphatase-IVA1; PTP4A1; PTPCAAX1; =Amino Acid, Peptide, or Protein; Enzyme