29788
Amphiphilic peptides were designed to fold into a beta - sheet monolayer structure while presenting the catalytic triad residues of the enzyme , acetylcholinesterase ( Glu , His and Ser ) , to a solution containing the organophosphate , paraoxon .
 Chemical: Glu; Chemical: His; Chemical: Ser; Chemical: organophosphate; Chemical: paraoxon
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: Glu; Chemical: His; Chemical: Ser; Chemical: organophosphate; Chemical: paraoxon