14777
Erythroid differentiation involves the activation of a number of erythroid-specific genes, most of which, including the globin genes and the erythropoietin receptor ( Epo-R ) gene , are, at least in part, regulated by the transcription factor GATA-1 .
 ( protein: erythropoietin receptor, None) , ( protein: Epo-R, None) , ( DNA: erythropoietin receptor ( Epo-R ) gene, None) , ( DNA: globin genes, None) , ( protein: GATA-1, None) , ( protein: transcription factor, 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: erythropoietin receptor, None) , ( protein: Epo-R, None) , ( DNA: erythropoietin receptor ( Epo-R ) gene, None) , ( DNA: globin genes, None) , ( protein: GATA-1, None) , ( protein: transcription factor, None) 