6123
Furthermore, we have demonstrated that both C/EBPbeta and GATA-1 can bind simultaneously to the C/EBP- and GATA-binding sites in the MBP promoter .
 ( DNA: MBP promoter, None) , ( protein: GATA-1, None) , ( protein: MBP, None) , ( protein: C/EBPbeta, None) , ( DNA: GATA-binding sites, 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: MBP promoter, None) , ( protein: GATA-1, None) , ( protein: MBP, None) , ( protein: C/EBPbeta, None) , ( DNA: GATA-binding sites, None) 