12145
An NH2-terminal truncation mutant of TRAF6 inhibited RANKL -mediated NF-kappaB activation , but failed to affect constitutive signaling induced by receptor overexpression , revealing a selective role for TRAF6 in ligand-induced activation events .
 NH2-terminal truncation mutant, TRAF6, RANKL, TRAF6, NF-kappaB
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:
 NH2-terminal truncation mutant, TRAF6, RANKL, TRAF6, NF-kappaB