2557
A GC box containing a binding site for Sp1 was identified ( nt 4623 to 4631 ).
 ( DNA: binding site, None) , ( DNA: nt 4623 to 4631, None) , ( DNA: GC box, None) , ( protein: Sp1, 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: binding site, None) , ( DNA: nt 4623 to 4631, None) , ( DNA: GC box, None) , ( protein: Sp1, None) 