1767
Differences in conformation of the hinge region distinguish androgen -bound from antiandrogen -bound receptor complexes , which represents an important feature of antiandrogen action .
 ( protein: hinge region, None) , ( protein: antiandrogen -bound receptor complexes, None) , ( protein: androgen -bound, 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: hinge region, None) , ( protein: antiandrogen -bound receptor complexes, None) , ( protein: androgen -bound, None) 