19766
As not all members of the H3K4 methyltransferase family contain n - SET domains , our studies draw attention to the n - SET domain as a predictor of an H2B ubiquitylation - sensing mechanism that leads to downstream H3K4 methylation .
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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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