SPARQL | HTML5 RDFa and Microdata document
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SHP-1/2 are tyrosine phosphatases. Here, SHP removes phosphates from PIP3 reverting it back to PIP2. (reverses the work of tyrosine kinase P13K) SHP is recruited to the PD-1 cytoplasmic tail when PD-1 ITIMs are phosphorylated.