13021
This study also found that the Z alpha ( ADAR1 ) in complex with a 11 - bp DNA duplex exhibits a Z - DNA - bound conformation distinct from that of free Z alpha ( ADAR1 ) and the initial contact conformations of Z alpha ( ADAR1 ) complexed with 13 - bp DNA duplexes .
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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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