1556
A xylE transcriptional fusion to the putative mxbD promoter showed low - level expression in wild - type cells grown on one - carbon ( C1 ) compounds and no detectable expression in cells grown on succinate .
 GENE: xylE transcriptional fusion; GENE: mxbD promoter
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: xylE transcriptional fusion; GENE: mxbD promoter