4114
An amino-terminal fragment of OCA-B binds the octamer site in the absence of a POU domain with the same sequence specificity.
 ( protein: amino-terminal fragment, None) , ( DNA: octamer site, None) , ( DNA: POU domain, None) , ( protein: OCA-B, 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:
 ( protein: amino-terminal fragment, None) , ( DNA: octamer site, None) , ( DNA: POU domain, None) , ( protein: OCA-B, None) 