4636
It was found that the MHC class II gene expression was associated with the de novo transcription of the gene encoding the CIITA trans-activator , a crucial MHC class II gene regulatory factor .
 ( DNA: MHC class II gene, None) , ( DNA: MHC class II gene, None) , ( protein: CIITA trans-activator, None) , ( protein: CIITA, None) , ( protein: MHC class II gene regulatory factor, 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) , ( DNA: MHC class II gene, None) , ( protein: CIITA trans-activator, None) , ( protein: CIITA, None) , ( protein: MHC class II gene regulatory factor, None) 