6138
Site - directed mutagenesis of the traI structural gene and application of purified mutant TraI proteins for in vitro assays served to evaluate the functional importance of conserved amino acid residues .
 GENE: traI structural gene; GENE: TraI proteins
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: traI structural gene, TraI proteins 
Answer:
 GENE: traI structural gene; GENE: TraI proteins