12336
Sigma factor sigma ( 54 ) has a distinct modus operandi for mediating the activation of bacterial RNA polymerase ( RNAP ) at promoter recognition motifs 12 and 24 bp upstream from transcription start sites .
 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