521
The transactivation of multiple cis elements , especially S and X2 , of the DR alpha proximal promoter in group II CID cells is CIITA dependent.
 ( DNA: X2, None) , ( DNA: proximal promoter, None) , ( DNA: multiple cis elements, None) , ( cell line: group II CID cells, None) , ( protein: CIITA, None) , ( DNA: DR alpha proximal promoter, None) , ( DNA: S, 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: X2, None) , ( DNA: proximal promoter, None) , ( DNA: multiple cis elements, None) , ( cell line: group II CID cells, None) , ( protein: CIITA, None) , ( DNA: DR alpha proximal promoter, None) , ( DNA: S, None) 