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
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: BpyAla; Chemical: amino acids