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Here we show that expression of KRAB domain suppresses in vivo the activating function of various defined activating transcription factors , and we demonstrate that the KRAB domain specifically silences the activity of promoters whose initiation is dependent on the presence of a TATA box .
 GENE: KRAB domain; GENE: activating transcription factors; GENE: KRAB domain
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: KRAB domain; GENE: activating transcription factors; GENE: KRAB domain