2844
Further, an inverse relationship was also observed between sterol modulated LDL -receptor gene transcription and the binding affinity of this 47 kDa factor to the SRE sequence .
 ( protein: 47 kDa factor, None) , ( DNA: SRE sequence, None) , ( protein: LDL, None) , ( DNA: LDL -receptor gene, 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: 47 kDa factor, None) , ( DNA: SRE sequence, None) , ( protein: LDL, None) , ( DNA: LDL -receptor gene, None) 