7082
Here we report a powerful catalytic tagging tool , the NEDDylator , which fuses a NEDD8 E2 - conjugating enzyme , Ubc12 , to the ubiquitin ligase , XIAP or cIAP1 .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None