22757
The presence of unfolded protein is detected by the ER - luminal sensor domains of the three UPR - transducer proteins IRE1 , PERK , and ATF6 , which then propagate the signal to the cytosol .
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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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