3x FLAG tagged PTPN22 were immunoprecipitated from Jurkat cells stimulated by TCR for 5min, and the proteins were eluted by FLAG peptides. This study aims to explore the phosphorylation sites on PTPN22 phosphatase, identifying two phosphorylation sites Ser325 and Ser449.
ORGANISM(S): Homo Sapiens (ncbitaxon:9606)