Activates the Jnk signaling pathway. H2O + O-phospho-L-tyrosyl-[protein] = L-tyrosyl-[protein] + phosphate H2O + O-phospho-L-seryl-[protein] = L-seryl-[protein] + phosphate H2O + O-phospho-L-threonyl-[protein] = L-threonyl-[protein] + phosphate Monomer. Myristoylation regulates subcellular location, and is necessary for activation of JNK. Belongs to the protein-tyrosine phosphatase family. Non-receptor class dual specificity subfamily. The publication has been retracted as they duplicated images.