10263
Moreover, a CIITA protein in which both functional alpha-helices have been deleted displays a dominant negative phenotype .
 ( protein: CIITA, None) , ( protein: CIITA protein, None) , ( protein: alpha-helices, 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) , ( protein: CIITA protein, None) , ( protein: alpha-helices, None) 