21232
Surprisingly , however , KKxx and KxKxx motifs bind differently , with their lysine residues transposed at the binding patches .
 Chemical: lysine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: lysine 
Answer:
 Chemical: lysine