11813
An F222W : W21F rGST A1 - 1 double mutant provides a direct fluorescence probe of changes in the environment of the C - terminal residue .
 GENE: F222W : W21F rGST A1 - 1 double mutant
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: F222W : W21F rGST A1 - 1 double mutant 
Answer:
 GENE: F222W : W21F rGST A1 - 1 double mutant