23534
However , when the similar simulations were carried out starting from subsite - 5 , both enzymes hold the substrate in 50 ns , indicating that the major difference between WTcat and W40Acat is the length of free chain - end of the substrate required to allow initiation of processive movements ; this also reflects the difference between crystalline and amorphous celluloses .
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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:
 None