12177
In mobility shift assays , a nuclear factor from THP-1 and U-937 cells was identified that binds to several AP-2 response elements within the B2 promoter , but does not react with AP-2 antibodies , and has a DNA sequence binding affinity profile that differs from AP-2 .
 ( protein: nuclear factor, None) , ( DNA: DNA sequence, None) , ( protein: AP-2 antibodies, None) , ( cell line: THP-1, None) , ( protein: AP-2, None) , ( DNA: AP-2 response elements, None) , ( cell line: U-937 cells, None) , ( protein: AP-2, None) , ( protein: AP-2, None) , ( DNA: B2 promoter, 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: nuclear factor, None) , ( DNA: DNA sequence, None) , ( protein: AP-2 antibodies, None) , ( cell line: THP-1, None) , ( protein: AP-2, None) , ( DNA: AP-2 response elements, None) , ( cell line: U-937 cells, None) , ( protein: AP-2, None) , ( protein: AP-2, None) , ( DNA: B2 promoter, None) 