14515
p49 has a approximately 18-fold-lower affinity for the HIV kappa B site (KD = 69.1 pM) than does the approximately 50-kDa protein NFKB1(p50) derived from p105 (KD = 3.9 pM).
 ( protein: NFKB1(p50), None) , ( DNA: kappa B site, None) , ( protein: p49, None) , ( protein: p105, 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: NFKB1(p50), None) , ( DNA: kappa B site, None) , ( protein: p49, None) , ( protein: p105, None) 