5675
E2F-1 activity is regulated by a number of proteins, including the retinoblastoma susceptibility gene product , cyclin-dependent kinases , and their inhibitors , proteins that have been implicated in the control of certain developmental processes .
 ( DNA: susceptibility gene, None) , ( protein: cyclin-dependent kinases, None) , ( protein: E2F-1, 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:
 ( DNA: susceptibility gene, None) , ( protein: cyclin-dependent kinases, None) , ( protein: E2F-1, None) 