9211
OCA-B , however, interacts with a different surface of the DNA-bound Oct-1 POU domain , interacting with both the POU(S) and POU(H) domains and the center of the ATGCAAAT octamer sequence .
 ( DNA: ATGCAAAT octamer sequence, None) , ( protein: POU(S) and POU(H) domains, None) , ( protein: Oct-1, None) , ( protein: Oct-1 POU domain, None) , ( protein: OCA-B, None) , ( protein: POU(H) domains, None) , ( protein: POU(S), 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: ATGCAAAT octamer sequence, None) , ( protein: POU(S) and POU(H) domains, None) , ( protein: Oct-1, None) , ( protein: Oct-1 POU domain, None) , ( protein: OCA-B, None) , ( protein: POU(H) domains, None) , ( protein: POU(S), None) 