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These three are extremely similar to one another , more so than other proteins , but they are all highly distinct in the way that they bind DNA and active transcription in vitro with different affinity ( Pendo-Mendez 2010 ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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