Enables several functions, including identical protein binding activity; mitogen-activated protein kinase binding activity; and protein tyrosine phosphatase activity. Involved in several processes, including positive regulation of cellular component organization; positive regulation of intracellular protein transport; and regulation of protein phosphorylation. Located in several cellular components, including perikaryon; proximal dendrite; and synaptic vesicle. Used to study transient cerebral ischemia. Biomarker of transient cerebral ischemia. Orthologous to human PTPN5 (protein tyrosine phosphatase non-receptor type 5). [provided by Alliance of Genome Resources, Apr 2022]