23540
Although the amino acid sequence of LaeA contains the motifs characteristic of seven - beta - strand methyltransferases , a methyl - accepting substrate of LaeA has not been identified .
 Chemical: amino acid; Chemical: methyl
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; Chemical: methyl