4822
We also demonstrate that two other sites contribute to promoter activity in B cells ; an Sp1 binding site adjacent to the octamer site , and the PU.1 autoregulatory site .
 ( DNA: PU.1 autoregulatory site, None) , ( cell type: B cells, None) , ( DNA: octamer site, None) , ( protein: PU.1, None) , ( DNA: Sp1 binding site, 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: PU.1 autoregulatory site, None) , ( cell type: B cells, None) , ( DNA: octamer site, None) , ( protein: PU.1, None) , ( DNA: Sp1 binding site, None) 