14124
Regulation of the Ets-related transcription factor Elf-1 by binding to the retinoblastoma protein .
 ( protein: Elf-1, None) , ( protein: retinoblastoma protein, None) , ( protein: Ets-related transcription factor, 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: Elf-1, None) , ( protein: retinoblastoma protein, None) , ( protein: Ets-related transcription factor, None) 