12703
These motifs are regulatory sequences within the so-called AU-rich elements ( AREs ) often found in 3' untranslated regions of genes such as cytokines , proto-oncogenes , and transcription factors .
 ( DNA: AU-rich elements, None) , ( protein: transcription factors, None) , ( DNA: 3#$%# untranslated regions, None) , ( DNA: regulatory sequences, None) , ( DNA: proto-oncogenes, None) , ( DNA: AREs, None) , ( protein: cytokines, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: AU-rich elements, None) , ( protein: transcription factors, None) , ( DNA: 3#$%# untranslated regions, None) , ( DNA: regulatory sequences, None) , ( DNA: proto-oncogenes, None) , ( DNA: AREs, None) , ( protein: cytokines, None) 