12861
Surprisingly, different combinations of disabling mutations within the HLF bZIP domain had little effect on the antiapoptotic property of the chimeric protein , so long as the amino-terminal portion of E2A remained intact.
 ( protein: HLF bZIP domain, None) , ( protein: E2A, None) , ( protein: chimeric protein, 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: HLF bZIP domain, None) , ( protein: E2A, None) , ( protein: chimeric protein, None) 