24047
Incorporation of BpyAla and other metal binding amino acids into peptide and protein libraries should enable the evolution of novel binding and catalytic activities .
 Chemical: BpyAla; Chemical: amino acids
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: BpyAla, amino acids 
Answer:
 Chemical: BpyAla; Chemical: amino acids