13150
The MHC class II transactivator ( CIITA ) requires conserved leucine charged domains for interactions with the conserved W box promoter element .
 CIITA, leucine charged domains, MHC class II transactivator, W box promoter element
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:
 CIITA, leucine charged domains, MHC class II transactivator, W box promoter element