Predicted to enable protein tyrosine phosphatase activity. Predicted to be involved in several processes, including endothelial cell migration; positive regulation of NIK/NF-kappaB signaling; and positive regulation of establishment of protein localization. Predicted to act upstream of or within several processes, including cellular response to leukemia inhibitory factor; positive regulation of vascular permeability; and regulation of vascular endothelial growth factor signaling pathway. Predicted to be active in cytoplasm and nucleus. Orthologous to human PTP4A3 (protein tyrosine phosphatase 4A3). [provided by Alliance of Genome Resources, Apr 2022]