2160
The critical region of THR beta was mapped to 3 amino acids in the distal box of the DNA binding domain .
 ( protein: DNA binding domain, None) , ( protein: distal box, None) , ( protein: THR, 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: DNA binding domain, None) , ( protein: distal box, None) , ( protein: THR, None) 