4411
Analysis of GR chimeric receptors containing the potent VP16 and E1A viral transactivation domains in place of the GR N terminus revealed that even low level expression of these receptors resulted in both enhanced steroid sensitivity and MMTV induction , thus supporting a role for transactivation in apoptosis .
 ( protein: GR, None) , ( protein: GR N terminus, None) , ( protein: GR, None) , ( protein: GR chimeric receptors, 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: GR, None) , ( protein: GR N terminus, None) , ( protein: GR, None) , ( protein: GR chimeric receptors, None) 