receptor-type tyrosine-protein phosphatase C receptor-type tyrosine-protein phosphatase C isoform CD45R A receptor-type tyrosine-protein phosphatase C that is a translation product of a mature transcript of the PTPRC gene, that includes the region encoded by the variable exons 4(A), 5(B), and 6(C). Example: UniProtKB:P08575-1. B220 CD45R CD45RABC PTPRC/iso:CD45R