1882
This is based on an initial nucleophilic attack by the thiolate of Cys - 32 with the formation of an unstable transient mixed disulfide involving Cys - 32 and one of the sulfurs in the substrate .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
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