4933
Although Stat binding to the intracellular domain of the cytokine receptor strongly depends on the phosphotyrosine residue , the recruitment of a specific Stat protein is dictated by amino acid residues C-terminal to the phosphotyrosine .
 intracellular domain, Stat protein, cytokine receptor
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:
 intracellular domain, Stat protein, cytokine receptor