8403
Moreover, a dominant negative form of CBP decreased the activity of class II promoters and levels of class II determinants on the surface of cells .
 ( protein: CBP, None) , ( DNA: class II promoters, None) , ( protein: class II determinants, 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: CBP, None) , ( DNA: class II promoters, None) , ( protein: class II determinants, None) 