8795
This E box sequence ( CACGTG ) is identical to the binding element for USF ( upstream stimulatory factor ) , a member of the helix - loop - helix family of transcription factors .
 USF, upstream stimulatory factor, helix - loop - helix family of transcription factors
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 USF, upstream stimulatory factor, helix - loop - helix family of transcription factors