5197
The developmental stage-specificity of PYBF and the location of its binding site between the fetal and adult beta-globin (HBB)-like genes suggest that PBYF and its binding site may function in fetal-to-adult globin gene switching .
 ( protein: PYBF, None) , ( protein: PBYF, None) , ( DNA: fetal and adult beta-globin (HBB)-like genes, None) , ( DNA: globin 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: PYBF, None) , ( protein: PBYF, None) , ( DNA: fetal and adult beta-globin (HBB)-like genes, None) , ( DNA: globin gene, None) 