8546
Electrophoretic mobility shift assay ( EMSA ) and supershift analyses of this region documented constitutive binding of Sp1 in unactivated nuclear extracts and inducible binding of p50-p65 NF-kappaB heterodimers after P/I activation.
 ( protein: NF-kappaB, None) , ( protein: Sp1, None) , ( protein: p50-p65 NF-kappaB heterodimers, 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: NF-kappaB, None) , ( protein: Sp1, None) , ( protein: p50-p65 NF-kappaB heterodimers, None) 