4691
Biochemical and molecular characterization of MegKTx peptides and transcripts shows a relation with toxins of three different alpha - KTx subfamilies ( alpha - KTx3 . x , alpha - KTx9 . x and alpha - KTx16 . x ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None