9791
Analysis of CD40 cytoplasmic domain truncation and point mutants defined a 10-amino acid CD40 cytoplasmic signaling determinant required for NF-kappa B activation .
 ( protein: CD40, None) , ( protein: CD40, None) , ( protein: NF-kappa B, None) , ( protein: CD40 cytoplasmic domain, None) , ( protein: 10-amino acid CD40 cytoplasmic signaling determinant, 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: CD40, None) , ( protein: CD40, None) , ( protein: NF-kappa B, None) , ( protein: CD40 cytoplasmic domain, None) , ( protein: 10-amino acid CD40 cytoplasmic signaling determinant, None) 