5575
This single nucleotide transition , predicted to change phenyalanine 646 to serine ( F646S ) , also maps to the SH2 domain .
 Chemical: nucleotide; Chemical: phenyalanine; Chemical: serine
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: nucleotide; Chemical: phenyalanine; Chemical: serine