10262
The ubiquitin E1 inhibitor UBEI - 41 or the proteasome inhibitor MG132 prevented IRF5 degradation , supporting the idea that its stability is regulated by the ubiquitin - proteasome system .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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