518
Here, we demonstrate that CIITA is an MHC class II gene-specific transcription activator .
 ( protein: MHC class II, None) , ( DNA: CIITA, None) , ( DNA: MHC class II gene-specific transcription activator, 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: MHC class II, None) , ( DNA: CIITA, None) , ( DNA: MHC class II gene-specific transcription activator, None) 