6215
T cell receptor ( TCR ) cross-linking is in part required for activation of NF-kappaB , which is dependent on the phosphorylation and degradation of IkappaBalpha .
 ( protein: IkappaBalpha, None) , ( protein: T cell receptor, None) , ( protein: NF-kappaB, None) , ( protein: TCR, 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: IkappaBalpha, None) , ( protein: T cell receptor, None) , ( protein: NF-kappaB, None) , ( protein: TCR, None) 