5087
Studies using an inhibitor or a mutant Lb proteinase indicated that stimulation of IRES - driven translation is mediated via proteolysis of some cellular component ( s ) .
 GENE: mutant Lb proteinase
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: mutant Lb proteinase 
Answer:
 GENE: mutant Lb proteinase