9424
Alternative splicing of the GC receptor (R) pre-messenger RNA generates a second GCR , termed GCR-beta , which does not bind GCs but antagonizes the transactivating activity of the classic GCR , termed GCR-alpha .
 ( protein: GCR-beta, None) , ( protein: GCR-alpha, None) , ( protein: GCR, None) , ( RNA: GC receptor (R) pre-messenger RNA, None) , ( protein: GC receptor, None) , ( protein: GCR, 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: GCR-beta, None) , ( protein: GCR-alpha, None) , ( protein: GCR, None) , ( RNA: GC receptor (R) pre-messenger RNA, None) , ( protein: GC receptor, None) , ( protein: GCR, None) 