8927
The Megakaryocyte/Platelet-specific enhancer of the alpha2beta1 integrin gene : two tandem AP1 sites and the mitogen-activated protein kinase signaling cascade .
 ( DNA: Megakaryocyte/Platelet-specific enhancer, None) , ( DNA: AP1 sites, None) , ( protein: mitogen-activated protein kinase, None) , ( DNA: alpha2beta1 integrin gene, 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: Megakaryocyte/Platelet-specific enhancer, None) , ( DNA: AP1 sites, None) , ( protein: mitogen-activated protein kinase, None) , ( DNA: alpha2beta1 integrin gene, None) 