5822
Comparison of the structural characteristics of Cu ( 2 + ) - bound and unbound alpha - syn12 peptide obtained in simulations using different force fields .
 Cu ( 2 + ), alpha - syn12 peptide
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Cu ( 2 + ), alpha - syn12 peptide