12339
The interface between monomers involves contacts in sigma ( 54 ) regions I and III , sequences that play key roles in the transcription activation of sigma ( 54 ) - RNAP holoenzyme .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None