1790
Analysis of various deletion mutants indicates that the sequence requirements for binding by QBP in vitro are indistinguishable from those necessary for Q activity in vivo , strongly suggesting that QBP is required for the function of this TATA - independent promoter .
 QBP, QBP
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 QBP, QBP