4631
These receptor functions required the presence of the box 3 motifs , as shown by the analysis of the mouse IL-10R constructs containing progressively truncated cytoplasmic domains .
 ( protein: progressively truncated cytoplasmic domains, None) , ( protein: box 3 motifs, None) , ( protein: IL-10R, 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: progressively truncated cytoplasmic domains, None) , ( protein: box 3 motifs, None) , ( protein: IL-10R, None) 