12140
Mapping of the structural requirements for TRAF /RANK interaction revealed multiple TRAF binding sites clustered in two distinct domains in the RANK cytoplasmic tail .
 TRAF, /RANK, RANK, TRAF binding sites, RANK cytoplasmic tail
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:
 TRAF, /RANK, RANK, TRAF binding sites, RANK cytoplasmic tail