10898
Mutations in the AT box or in the BSAP sites did not affect CD19 reporter construct activity , while a mutation of the GC box reduced it modestly, and a PyG box mutation reduced it dramatically.
 ( DNA: BSAP sites, None) , ( protein: BSAP, None) , ( DNA: GC box, None) , ( DNA: AT box, None) , ( protein: CD19, None) , ( DNA: PyG box, None) , ( DNA: reporter construct, 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: BSAP sites, None) , ( protein: BSAP, None) , ( DNA: GC box, None) , ( DNA: AT box, None) , ( protein: CD19, None) , ( DNA: PyG box, None) , ( DNA: reporter construct, None) 