8434
Kisspeptin is a 54 - amino acid peptide which is encoded by the KiSS - 1 gene and activates the G protein - coupled receptor GPR54 .
 Chemical: amino acid
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: amino acid