4135
Circular permutation and phasing analyses demonstrated that PU.1 binding but not TFE3 or Ets-1 bends mu enhancer DNA toward the major groove .
 mu enhancer, TFE3, mu enhancer DNA, major groove, PU.1, Ets-1
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:
 mu enhancer, TFE3, mu enhancer DNA, major groove, PU.1, Ets-1