5881
While CD40 ligation strongly activates the SAPKs (up to 25-fold), it does not affect members of the mitogen-activated protein kinase family ( MAPK ; ERK1 and ERK2 ).
 ( protein: ERK2, None) , ( protein: CD40, None) , ( protein: mitogen-activated protein kinase family, None) , ( protein: MAPK, None) , ( protein: ERK1, None) , ( protein: SAPKs, 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: ERK2, None) , ( protein: CD40, None) , ( protein: mitogen-activated protein kinase family, None) , ( protein: MAPK, None) , ( protein: ERK1, None) , ( protein: SAPKs, None) 