13087
Two clones were obtained in which the loss of NF-kappaB binding activity correlated with the constitutive expression of the transgenic IkappaBalpha .
 ( protein: IkappaBalpha, None) , ( protein: NF-kappaB, 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: NF-kappaB, None) 