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. 2013 Jun 5;4(6):884–889. doi: 10.18632/oncotarget.1021

Figure 1. IGF-1R is one of the mediators of STAT3 activity.

Figure 1

STAT3 is phosphorylated by JAK2, after being recruited to IGF-1R by RACK1. After STAT3's phosphorylation by JAK2, PTPRD normally dephosphorylates STAT3. In the presence of a truncated PTPRD, STAT3 would remain phosphorylated.