2644
Tat-binding protein 7 is a subunit of the 26S protease .
 26S protease, Tat-binding protein 7
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:
 26S protease, Tat-binding protein 7