865
Electrophoretic mobility shift assay , using in vitro translated TR2 orphan receptor with a molecular mass of 67 kilodaltons , showed a specific binding with high affinity (dissociation constant = 9 nM) for this DNA sequence .
 ( protein: TR2 orphan receptor, None) , ( DNA: DNA sequence, None) , ( protein: 67 kilodaltons, 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: TR2 orphan receptor, None) , ( DNA: DNA sequence, None) , ( protein: 67 kilodaltons, None) 