Enables protein kinase binding activity and protein tyrosine phosphatase activity. Acts upstream of or within protein dephosphorylation. Predicted to be located in cell junction; cytosol; and plasma membrane. Is expressed in several structures, including central nervous system; dorsal root ganglion; and retina nuclear layer. Orthologous to human PTPRR (protein tyrosine phosphatase receptor type R). [provided by Alliance of Genome Resources, Apr 2022]