12963
The labeling of proteins with small ubiquitin ( Ub ) and ubiquitin - like ( Ubl ) modifiers regulates a plethora of activities within the cell , such as protein recycling , cell cycle modifications , and protein translocation .
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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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