A

B

C

pSTAT5

KIT

D816V Y568-Y570FF

GST-STAT5-Y (ng) 0 200 400 0 200 400

pSTAT5

GST

GST-STAT5 Y F Y F

D816V Y568-Y570FF

Supplemental Figure 2

Qu

an

tific

atio

n o

f p

ST

AT

5