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( 13 ) C NMR data suggests that both phosphorylated serine and neighboring valine residues exist in a beta - sheet conformation while glycine and leucine residues common in GGX repeats likely reside in random coil conformations .
 Chemical: ( 13 ) C; Chemical: phosphorylated serine; Chemical: valine; Chemical: glycine; Chemical: leucine
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: ( 13 ) C; Chemical: phosphorylated serine; Chemical: valine; Chemical: glycine; Chemical: leucine