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It also produces an NH2 terminus that corresponds to an equivalent NH2 terminus on the processed matrix form of the similar alpha1 ( XI ) chain , thus suggesting physiological significance .
 GENE: alpha1 ( XI ) chain
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: alpha1 ( XI ) chain