4329
A 2-bp mutation within the CBF site resulted in a 2-3-fold decrease in the activities of both a 69-bp proximal promoter fragment and a 627-bp full-length promoter fragment .
 ( DNA: 627-bp full-length promoter fragment, None) , ( DNA: 69-bp proximal promoter fragment, None) , ( protein: CBF, None) , ( DNA: 2-bp mutation, 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: 627-bp full-length promoter fragment, None) , ( DNA: 69-bp proximal promoter fragment, None) , ( protein: CBF, None) , ( DNA: 2-bp mutation, None) 