5225
Ten mutants of the simian immunodeficiency virus ( SIV ) SIVmac239 bearing deletions (delta) or substitutions (subst) in the NF-kappaB and/or Sp1 binding elements were created, and the replicative capacities of the mutants were analyzed.
 ( DNA: Sp1 binding elements, None) , ( protein: Sp1, 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:
 ( DNA: Sp1 binding elements, None) , ( protein: Sp1, None) , ( protein: NF-kappaB, None) 