5137
During normal T-cell activation , IkappaBalpha is rapidly phosphorylated, ubiquitinated, and degraded by the 26S proteasome , thus permitting the release of functional NF-kappaB .
 IkappaBalpha, 26S proteasome, 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:
 IkappaBalpha, 26S proteasome, NF-kappaB