1574
The RNA - binding and RNA - DNA helicase activities of the Escherichia coli transcription termination factor rho have been investigated using natural RNA molecules that are 255 and 391 nucleotide residues in length and that contain the trp t ' rho - dependent termination sequence of E . coli .
 GENE: RNA - DNA helicase; GENE: Escherichia coli transcription termination factor rho; GENE: trp t ' rho - dependent termination sequence
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: RNA - DNA helicase; GENE: Escherichia coli transcription termination factor rho; GENE: trp t ' rho - dependent termination sequence