12928
Using electrophoretic mobility shift assays and specific antibodies, we showed that CREB-1 binds specifically to the -79 to -52 region of the CD4 promoter .
 ( DNA: CD4 promoter, None) , ( protein: CREB-1, None) , ( DNA: -79 to -52 region, 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:
 ( DNA: CD4 promoter, None) , ( protein: CREB-1, None) , ( DNA: -79 to -52 region, None) 