part of cell surface receptor signaling pathway via JAK-STAT tyrosine phosphorylation of STAT protein GO:0042503 GO:0042502 tyrosine phosphorylation of Stat6 protein GO:0042505 GO:0042504 The process of introducing a phosphate group to a tyrosine residue of a STAT (Signal Transducer and Activator of Transcription) protein. tyrosine phosphorylation of Stat2 protein tyrosine phosphorylation of Stat1 protein biological_process tyrosine phosphorylation of Stat3 protein tyrosine phosphorylation of Stat4 protein tyrosine phosphorylation of Stat7 protein GO:0042507 GO:0042506 tyrosine phosphorylation of Stat5 protein GO:0042508 GO:0007260 peptidyl-tyrosine phosphorylation