4273
Increasing the levels of BCL-2 retarded the G0-->S transition, sustained the levels of cyclin-dependent kinase inhibitor p27Kip1 , and repressed postactivation death.
 ( protein: BCL-2, None) , ( protein: cyclin-dependent kinase, 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: BCL-2, None) , ( protein: cyclin-dependent kinase, None) 