10904
Multiple functionally important EBF and E47 binding sites were identified in the lambda5 promoter/enhancer region , indicating that lambda5 is a direct genetic target for these transcription factors .
 ( DNA: lambda5 promoter/enhancer region, None) , ( protein: transcription factors, None) , ( DNA: lambda5, None) , ( DNA: lambda5, 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: lambda5 promoter/enhancer region, None) , ( protein: transcription factors, None) , ( DNA: lambda5, None) , ( DNA: lambda5, None) 