7772
The transactivator CIITA behaves as a master controller of constitutive and inducible MHC class II gene activation , but its exact mechanism of action is not known.
 ( DNA: MHC class II gene, None) , ( cell type: MHC class II, None) , ( protein: CIITA, None) , ( protein: transactivator, 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: MHC class II gene, None) , ( cell type: MHC class II, None) , ( protein: CIITA, None) , ( protein: transactivator, None) 