1629
In vivo modification of major histocompatibility complex class II DRA promoter occupancy mediated by the AIR-1 trans-activator .
 ( protein: major histocompatibility complex class II, None) , ( DNA: major histocompatibility complex class II DRA promoter, None) , ( protein: AIR-1 trans-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: major histocompatibility complex class II, None) , ( DNA: major histocompatibility complex class II DRA promoter, None) , ( protein: AIR-1 trans-activator, None) 