13008
A set of six dipeptides containing pyrrolysine invariably at their N - terminal positions is studied in gas and aqueous phase using a polarizable continuum model ( PCM ) .
 Chemical: dipeptides; Chemical: pyrrolysine; Chemical: N
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: dipeptides; Chemical: pyrrolysine; Chemical: N