5622
In electrophoretic mobility shift assays using the E1 oligonucleotide as probe, nuclear extracts from unstimulated T and B cell lines formed a constitutive complex termed complex I , while nuclear extracts from stimulated SCM-1-producer T cell lines formed a higher mobility complex termed complex II with a concomitant decrease in complex I .
 ( DNA: E1, None) , ( protein: complex I, None) , ( protein: complex II, None) , ( protein: constitutive complex, None) , ( cell line: B cell lines, None) , ( cell line: SCM-1-producer T cell lines, None) , ( protein: higher mobility complex, None) , ( protein: complex I, 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: E1, None) , ( protein: complex I, None) , ( protein: complex II, None) , ( protein: constitutive complex, None) , ( cell line: B cell lines, None) , ( cell line: SCM-1-producer T cell lines, None) , ( protein: higher mobility complex, None) , ( protein: complex I, None) 