8534
In this study, we show that certain NF-kappaB/Rel members , predominantly c-Rel , interact with enhancer sequences for STAT5 , a key transcription factor mediating IL-2 -induced T-cell proliferation .
 ( protein: NF-kappaB/Rel members, None) , ( protein: c-Rel, None) , ( protein: STAT5, None) , ( protein: IL-2, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: NF-kappaB/Rel members, None) , ( protein: c-Rel, None) , ( protein: STAT5, None) , ( protein: IL-2, None) 