13696
In marked contrast, expression of the dominant interfering deltaDNA-binding domain RXR , containing a deletion of the entire DNA-binding domain , was incompatible with erythroid cell growth in vitro, suggesting a pivotal role of RXR for erythroid cell development .
 ( protein: RXR, None) , ( protein: RXR, None) , ( protein: dominant interfering deltaDNA-binding domain, None) , ( DNA: entire DNA-binding domain, 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: RXR, None) , ( protein: RXR, None) , ( protein: dominant interfering deltaDNA-binding domain, None) , ( DNA: entire DNA-binding domain, None) 