18311
Protein crystallography shows that this effect arises from the binding of the tweezers to a single surface - exposed lysine ( Lys214 ) of the 14 - 3 - 3 protein in the proximity of its central channel , which normally binds the partner proteins .
 Chemical: lysine; Chemical: Lys214
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: lysine; Chemical: Lys214