catalytic activity:Protein tyrosine phosphate + H(2)O = protein tyrosine + phosphate.,caution:PubMed:8387522 and PubMed:2170109 have termed this protein RPTPase beta.,function:May be involved in the regulation of specific developmental processes in the CNS.,sequence caution:Contaminating sequence. The N-terminus may be contaminated with vector sequence.,similarity:Belongs to the protein-tyrosine phosphatase family. Receptor class 5 subfamily.,similarity:Contains 1 alpha-carbonic anhydrase domain.,similarity:Contains 1 fibronectin type-III domain.,similarity:Contains 2 tyrosine-protein phosphatase domains.,subunit:The carbonic-anhydrase like domain binds to contactin.,tissue specificity:Specifically expressed in the central nervous system, where it is localized in the Purkinje cell layer of the cerebellum, the dentate gyrus, and the subependymal layer of the anterior horn of the lateral v

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