10858
Disruption of the Jak1 -binding proline-rich Box1 region of IL-4Ralpha abolished signaling by this chimeric receptor .
 chimeric receptor, Jak1, IL-4Ralpha, Jak1 -binding proline-rich Box1 region
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 chimeric receptor, Jak1, IL-4Ralpha, Jak1 -binding proline-rich Box1 region