5823
The effects of Cu ( 2 + ) binding and the utilization of different force fields when modeling the structural characteristics of alpha - syn12 peptide were investigated .
 Chemical: Cu ( 2 + ); Chemical: alpha - syn12 peptide
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Cu ( 2 + ), alpha - syn12 peptide 
Answer:
 Chemical: Cu ( 2 + ); Chemical: alpha - syn12 peptide