9898
The class II trans-activator ( CIITA ) is a bi- or multi-functional domain protein which plays a critical role in the expression of MHC class II genes .
 ( protein: CIITA, None) , ( DNA: MHC class II genes, None) , ( protein: class II trans-activator, None) , ( protein: bi- or multi-functional domain 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: CIITA, None) , ( DNA: MHC class II genes, None) , ( protein: class II trans-activator, None) , ( protein: bi- or multi-functional domain protein, None) 