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Characterization of the regulon controlled by the leucine - responsive regulatory protein in Escherichia coli .
 GENE: leucine - responsive regulatory protein
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: leucine - responsive regulatory protein 
Answer:
 GENE: leucine - responsive regulatory protein